Document And Entity Information
Document And Entity Information | 12 Months Ended |
Dec. 31, 2022 | |
Document Information [Line Items] | |
Entity Central Index Key | 0000914139 |
Entity Registrant Name | PARKERVISION INC |
Amendment Flag | false |
Document Fiscal Period Focus | FY |
Document Fiscal Year Focus | 2022 |
Document Type | S-1 |
Entity Incorporation, State or Country Code | FL |
Entity Tax Identification Number | 59-2971472 |
Entity Address, Address Line One | 4446-1A Hendricks Avenue, Suite 354 |
Entity Address, City or Town | Jacksonville |
Entity Address, State or Province | FL |
Entity Address, Postal Zip Code | 32207 |
City Area Code | 904 |
Local Phone Number | 732-6100 |
Entity Filer Category | Non-accelerated Filer |
Entity Small Business | true |
Entity Emerging Growth Company | false |
Consolidated Balance Sheets
Consolidated Balance Sheets - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
CURRENT ASSETS: | ||
Cash and cash equivalents | $ 109 | $ 1,030 |
Prepaid expenses | 244 | 574 |
Other current assets | 30 | 25 |
Total current assets | 383 | 1,629 |
Intangible assets, net | 1,359 | 1,785 |
Operating lease right-of-use assets | 4 | 7 |
Other assets, net | 5 | 19 |
Total assets | 1,751 | 3,440 |
CURRENT LIABILITIES: | ||
Accounts payable | 901 | 706 |
Accrued expenses: | ||
Salaries and wages | 23 | 27 |
Professional fees | 79 | 109 |
Other accrued expenses | 486 | 555 |
Related party note payable, current portion | 139 | 94 |
Convertible notes, current portion | 625 | 0 |
Operating lease liabilities, current portion | 4 | 155 |
Total current liabilities | 2,257 | 1,646 |
LONG-TERM LIABILITIES: | ||
Secured contingent payment obligation | 40,708 | 37,372 |
Unsecured contingent payment obligations | 5,089 | 5,691 |
Convertible notes, net of current portion | 3,913 | 2,895 |
Related party note payable, net of current portion | 473 | 609 |
Operating lease liabilities, net of current portion | 0 | 4 |
Total long-term liabilities | 50,183 | 46,571 |
Total liabilities | 52,440 | 48,217 |
COMMITMENTS AND CONTINGENCIES | ||
SHAREHOLDERS' DEFICIT: | ||
Common stock, $.01 par value, 175,000 and 150,000 shares authorized, 81,246 and 76,992 issued and outstanding at December 31, 2022 and 2021, respectively | 812 | 770 |
Additional paid-in capital | 391,724 | 387,865 |
Accumulated deficit | (443,225) | (433,412) |
Total shareholders' deficit | (50,689) | (44,777) |
Total liabilities and shareholders' deficit | $ 1,751 | $ 3,440 |
Consolidated Balance Sheets (Pa
Consolidated Balance Sheets (Parentheticals) - $ / shares shares in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
Common stock, shares authorized (in shares) | 175,000 | 150,000 |
Common stock, shares issued (in shares) | 81,246 | 76,992 |
Common stock, shares outstanding (in shares) | 81,246 | 76,992 |
Consolidated Statements of Comp
Consolidated Statements of Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Licensing revenue | $ 925 | $ 144 |
Cost of sales | (10) | (5) |
Gross margin | 915 | 139 |
Selling, general, and administrative expenses | 7,773 | 8,088 |
Total operating expenses | 7,773 | 8,088 |
Interest and other income | 103 | 242 |
Interest and other expense | (324) | (251) |
Change in fair value of contingent payment obligations | (2,734) | (4,372) |
Total interest and other | (2,955) | (4,381) |
Net loss before income tax | (9,813) | (12,330) |
Income tax expense | 0 | 0 |
Net loss | (9,813) | (12,330) |
Other comprehensive income, net of tax | 0 | 0 |
Comprehensive loss | $ (9,813) | $ (12,330) |
Basic and diluted net loss per common share (in dollars per share) | $ (0.13) | $ (0.17) |
Weighted average common shares outstanding (in shares) | 78,395 | 71,299 |
Consolidated Statements of Shar
Consolidated Statements of Shareholders' Deficit - USD ($) $ in Thousands | Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Conversion and Payment of Interest-in-kind on Convertible Debt [Member] Common Stock [Member] | Conversion and Payment of Interest-in-kind on Convertible Debt [Member] Additional Paid-in Capital [Member] | Conversion and Payment of Interest-in-kind on Convertible Debt [Member] Retained Earnings [Member] | Conversion and Payment of Interest-in-kind on Convertible Debt [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Total |
Balance at Dec. 31, 2020 | $ 0 | $ (1,126) | $ 279 | $ (847) | $ 586 | $ 376,954 | $ (421,361) | $ (43,821) | ||||
Issuance of common stock and warrants in public and private offerings, net of issuance costs and initial fair value of contingent payment rights | 73 | 5,701 | 0 | 5,774 | ||||||||
Issuance of common stock upon exercise of options and warrants | 63 | 959 | 0 | 1,022 | ||||||||
Issuance of common stock and warrants for services | 9 | 863 | 0 | 872 | ||||||||
Issuance of common stock upon conversion and payment of interest in kind on convertible debt | $ 37 | $ 1,201 | $ 0 | $ 1,238 | ||||||||
Share-based compensation, net of shares withheld for taxes | 2 | 3,313 | 0 | 3,315 | ||||||||
Net loss | 0 | 0 | (12,330) | (12,330) | ||||||||
Balance at Dec. 31, 2021 | 770 | 387,865 | (433,412) | (44,777) | ||||||||
Issuance of common stock and warrants in public and private offerings, net of issuance costs and initial fair value of contingent payment rights | 20 | 362 | 0 | 382 | ||||||||
Issuance of common stock upon exercise of options and warrants | 5 | 78 | 0 | 83 | ||||||||
Issuance of common stock upon conversion and payment of interest in kind on convertible debt | $ 14 | $ 282 | $ 0 | $ 296 | ||||||||
Share-based compensation, net of shares withheld for taxes | 1 | 3,080 | 0 | 3,081 | ||||||||
Net loss | 0 | 0 | (9,813) | (9,813) | ||||||||
Issuance of common stock, warrants, and options for services | 2 | 57 | 0 | 59 | ||||||||
Balance at Dec. 31, 2022 | $ 812 | $ 391,724 | $ (443,225) | $ (50,689) |
Consolidated Statements of Cash
Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
CASH FLOWS FROM OPERATING ACTIVITIES: | ||
Net loss | $ (9,813) | $ (12,330) |
Adjustments to reconcile net loss to net cash used in operating activities: | ||
Depreciation and amortization | 311 | 371 |
Share-based compensation | 3,081 | 3,315 |
Change in fair value of contingent payment obligations | 2,734 | 4,372 |
Loss on disposal/impairment of equipment and other assets | 124 | 43 |
Loan forgiveness | 0 | (194) |
Changes in operating assets and liabilities: | ||
Prepaid expenses and other assets | 396 | 784 |
Accounts payable and accrued expenses | 363 | (3,917) |
Operating lease liabilities | (155) | (146) |
Total adjustments | 6,854 | 4,628 |
Net cash used in operating activities | (2,959) | (7,702) |
CASH FLOWS FROM INVESTING ACTIVITIES: | ||
Purchases of property and equipment | (4) | (3) |
Net cash used in investing activities | (4) | (3) |
CASH FLOWS FROM FINANCING ACTIVITIES: | ||
Net proceeds from issuance of common stock, including contingent payment rights, in private offerings | 382 | 6,186 |
Net proceeds from exercise of options and warrants | 83 | 1,022 |
Net proceeds from debt financings | 1,668 | 0 |
Debt repayments | (91) | (100) |
Net cash provided by financing activities | 2,042 | 7,108 |
NET CHANGE IN CASH AND CASH EQUIVALENTS | (921) | (597) |
CASH AND CASH EQUIVALENTS, beginning of year | 1,030 | 1,627 |
CASH AND CASH EQUIVALENTS, end of year | 109 | 1,030 |
SUPPLEMENTAL CASH FLOW INFORMATION: | ||
Cash paid for interest | 24 | 17 |
Cash paid for income taxes | $ 0 | $ 0 |
Note 1 - Significant Accounting
Note 1 - Significant Accounting Policies | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Significant Accounting Policies [Text Block] | 1. SIGNIFICANT ACCOUNTING POLICIES ParkerVision, Inc. and its wholly-owned German subsidiary, ParkerVision GmbH (collectively “ParkerVision”, “we” or the “Company”) is in the business of innovating fundamental wireless hardware technologies and products. We have determined that our business currently operates under a single operating and reportable segment. We have designed and developed proprietary radio frequency (“RF”) technologies and integrated circuits based on those technologies, and we license our technologies to others for use in wireless communication products. We have expended significant financial and other resources to research and develop our RF technologies and to obtain patent protection for those technologies in the United States of America (“U.S.”) and certain foreign jurisdictions. We believe certain patents protecting our proprietary technologies have been broadly infringed by others, and therefore the primary focus of our business plan is the enforcement of our intellectual property rights through patent licensing and infringement litigation efforts. We currently have patent enforcement actions ongoing in various U.S. district courts against mobile handset, smart television and other WiFi product providers, as well as semiconductor suppliers for the infringement of a number of our RF patents. We have made significant investments in developing and protecting our technologies, the returns on which are dependent upon the generation of future revenues for realization. Basis of Presentation Our consolidated financial statements are prepared in accordance with generally accepted accounting principles in the U.S. (“GAAP”). Certain reclassifications have been made to prior period amounts to conform to the current period presentation. The consolidated financial statements include the accounts of ParkerVision, Inc. and our wholly-owned German subsidiary, ParkerVision GmbH, after elimination of all intercompany transactions and accounts. Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The more significant estimates made by us include projected future cash flows and risk-adjusted discount rates for estimating the fair value of our contingent payment obligations, the volatility and estimated lives of share-based awards used in the estimate of the fair market value of share-based compensation, the assessment of recoverability of long-lived assets, the amortization periods for intangible and long-lived assets, and the valuation allowance for deferred taxes. Actual results could differ from the estimates made. We periodically evaluate estimates used in the preparation of the financial statements for continued reasonableness. Appropriate adjustments, if any, to the estimates used are made prospectively based upon such periodic evaluation. Cash and Cash Equivalents We consider cash and cash equivalents to include cash on hand, interest-bearing deposits, overnight repurchase agreements and investments with original maturities of three Intangible Assets We capitalize outside legal costs and agency filing fees incurred in connection with securing the rights to our intellectual property. Patents, copyrights, and other intangible assets are amortized using the straight-line method over their estimated period of benefit. We estimate the economic lives of our patents and copyrights to be fifteen twenty may may Contingent Payment Obligations We have accounted for our secured and unsecured contingent payment obligations as long-term debt in accordance with Accounting Standards Codification (“ASC”) 470 10 25, 825, 3 11 Leases We have accounted for our finance and operating leases in accordance with ASC 842, 12 For operating leases with terms greater than 12 not twelve Finance leases are included in property and equipment and other accrued expenses on the consolidated balance sheets. Finance leases are recorded as an asset and an obligation at an amount equal to the present value of the minimum lease payments during the lease term. Amortization expense and interest expense associated with finance leases are included in selling, general, and administrative expense and interest expense, respectively, on the consolidated statements of comprehensive loss. Refer to Note 7 Convertible Debt We have issued debt that is convertible, at the holder’s option, into shares of our common stock at fixed conversion prices. Certain of the convertible notes were issued with conversion prices that were below market value of our common stock on the closing date resulting in a beneficial conversion feature which we recorded to equity with a corresponding discount to the debt that was amortized over the life of the notes as interest expense. Effective January 1, 2021, 2020 06 470 20 815 40 no December 15, 2023, December 15, 2020. Adoption of ASU 2020 06 Revenue Recognition We account for revenue under ASC 606, five 1 2 3 4 5 Our revenue is derived from patent licensing and settlement agreements. We have an active monitoring and enforcement program with respect to our intellectual property rights that includes seeking appropriate compensation from third may may Refer to Note 3 Cost of Sales Cost of sales includes amortization of intangible assets directly linked with revenue generating licensing activities. Amortization expense for intangible assets that are not Accounting for Share-Based Compensation We have various share-based compensation programs which provide for equity awards including stock options, restricted stock units (“RSUs”) and restricted stock awards (“RSAs”). We calculate the fair value of share-based equity awards on the date of grant and recognize the calculated fair value as compensation expense over the requisite service periods of the related awards. We estimate the fair value of stock option awards using the Black-Scholes option valuation model. This valuation model requires the use of highly subjective assumptions and estimates including how long employees will retain their stock options before exercising them and the volatility of our common stock price over the expected life of the equity award. Such estimates, and the basis for our conclusions regarding such estimates, are outlined in detail in Note 15. not Income Taxes The provision for income taxes is based on loss before taxes as reported in the accompanying consolidated statements of comprehensive loss. Deferred tax assets and liabilities are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns. Deferred tax assets and liabilities are determined based on differences between the financial statement carrying amounts and the tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. Valuation allowances are established to reduce deferred tax assets when, based on available objective evidence, it is more likely than not not not not Loss per Common Share Basic loss per common share is determined based on the weighted-average number of common shares outstanding during each year. Diluted loss per common share is the same as basic loss per common share as all potential common shares are excluded from the calculation, as their effect is anti-dilutive. The number of shares underlying outstanding options, warrants, and convertible notes at December 31, 2022 2021 2022 2021 Options outstanding 24,380 23,215 Warrants outstanding 10,346 10,346 Shares underlying convertible notes 32,734 20,157 67,460 53,718 These potential shares were excluded from the computation of diluted loss per share as their effect would have been anti-dilutive. |
Note 2 - Liquidity and Going Co
Note 2 - Liquidity and Going Concern | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Substantial Doubt about Going Concern [Text Block] | 2. LIQUIDITY AND GOING CONCERN The accompanying consolidated financial statements as of and for the year ended December 31, 2022 one not We have incurred significant losses from operations and negative cash flows in every year since inception and have utilized the proceeds from the sales of our equity and equity-linked securities and our contingent funding arrangements with third December 31, 2022 December 31, 2022 one We had cash and cash equivalents of approximately $0.1 million at December 31, 2022 January 2023 ( 18 not twelve Our business plan is currently focused solely on our patent enforcement and technology licensing objectives. The timing and amount of proceeds from our patent enforcement actions are difficult to predict and there can be no 13 Significant portions of our litigation costs to date have been funded by contingent payment arrangements with legal counsel. Fee discounts offered by legal counsel in exchange for contingent payments upon successful outcome in our litigation are not In March 2023, 18 twelve one no The long-term continuation of our business plan is dependent upon our ability to secure sufficient financing to support our business, and our ability to generate revenues and/or patent-related proceeds sufficient to offset expenses and meet our contingent payment obligation and other long-term debt repayment obligations. Failure to generate sufficient revenues, raise additional capital through debt or equity financings, and/or reduce operating costs could have a material adverse effect on our ability to meet our short and long-term liquidity needs and achieve our intended long-term business objectives. |
Note 3 - Revenue
Note 3 - Revenue | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Revenue from Contract with Customer [Text Block] | 3. REVENUE During the years ended December 31, 2022 2021 no no no no December 31, 2022 |
Note 4 - Prepaid Expenses
Note 4 - Prepaid Expenses | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Prepaid Expenses [Text Block] | 4. PREPAID EXPENSES Prepaid expenses consisted of the following at December 31, 2022 2021 2022 2021 Prepaid services $ 202 $ 523 Prepaid insurance 25 23 Prepaid licenses, software tools and support 15 16 Other prepaid expenses 2 12 $ 244 $ 574 Prepaid services at December 31, 2022 2021 |
Note 5 - Intangible Assets
Note 5 - Intangible Assets | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Intangible Assets Disclosure [Text Block] | 5. INTANGIBLE ASSETS Intangible assets consisted of the following at December 31, 2022 2021 2022 2021 Patents and copyrights $ 14,319 $ 14,755 Less accumulated amortization (12,960 ) (12,970 ) $ 1,359 $ 1,785 Amortization expense for the years ended December 31, 2022 2021 December 31, 2022 2021 Future estimated amortization expense for intangible assets that have remaining unamortized amounts as of December 31, 2022 2023 $ 256 2024 243 2025 207 2026 140 2027 122 2028 and thereafter 391 Total $ 1,359 |
Note 6 - Accrued Liabilities
Note 6 - Accrued Liabilities | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Accounts Payable and Accrued Liabilities Disclosure [Text Block] | 6. ACCRUED LIABILITIES Other accrued expenses consisted of the following at December 31, 2022 2021 2022 2021 Advances $ 425 $ 500 Accrued interest 56 28 Other accrued expenses 5 27 $ 486 $ 555 Advances include amounts received from litigation counsel as advanced reimbursement of out-of-pocket expenses expected to be incurred by us. |
Note 7 - Leases
Note 7 - Leases | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Lessee, Operating Leases [Text Block] | 7. LEASES We lease our office and other facilities and certain office equipment under long-term, non-cancelable operating leases. No December 31, 2022 2021 2021. November 2022 Lease expense for operating leases is generally recognized on a straight-line basis over the lease term and is included in operating expenses on the consolidated statement of comprehensive loss. We recognized operating lease costs of $0.04 million for each of the years ended December 31, 2022 2021 December 31, 2022 2021 Supplemental Cash Flow Information The following table summarizes the supplemental cash flow information related to leases (in thousands): Year Ended Year Ended December 31, December 31, 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 193 $ 181 Cash received for amounts included in the measurement of sublease assets: Operating cash flows from operating subleases 120 44 Other Information The table below summarizes other supplemental information related to leases: December 31, December 31, 2022 2021 Weighted-average remaining lease term (in years): Operating leases 0.8 0.9 Operating subleases - 0.9 Weighted average discount rate Operating leases (1) 16.2 % 12.2 % ( 1 Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2019. Undiscounted Cash Flows The future maturities of lease liabilities consist of the following as of December 31, 2022 Operating Leases 2023 $ 4 Thereafter - Total undiscounted lease payments 4 Less: imputed interest - Present value of lease liabilities 4 Less: current portion (4 ) Long-term lease obligations $ - |
Note 8 - Notes Payable
Note 8 - Notes Payable | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Long-Term Debt [Text Block] | 8. Notes Payable Note Payable to a Related Party We have an unsecured promissory note payable of $0.6 million to Sterne, Kessler, Goldstein, & Fox, PLLC (“SKGF”), a related party (see Note 16 April 30, 2027. December 31, 2022 2021 At December 31, 2022 2023 $ 139 2024 133 2025 139 2026 144 2027 57 Total $ 612 The estimated fair value of our notes payable at December 31, 2022 |
Note 9 - Convertible Notes
Note 9 - Convertible Notes | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Convertible Debt [Text Block] | 9. Convertible Notes Our convertible notes represent five 2020 06 January 1, 2021, 1 We have the option to prepay the majority of the notes any time following the one two three four may For the year ended December 31, 2022 December 31, 2021 December 31, 2022 For the years ended December 31, 2022 2021 December 31, 2022 2021 In 2022 five August 22, 2022 ( No. 333 266777 January 2023, five 18 All of the shares underlying our convertible notes, including shares reserved for future in-kind interest payments on the notes, have been or will be registered for resale. Convertible notes payable at December 31, 2022 2021 Fixed Conversion Interest December 31, Description Rate Rate Maturity Date 2022 2021 Convertible notes dated September 10, 2018 $ 0.40 8.0 % September 7, 2023 $ 200 $ 200 Convertible notes dated September 19, 2018 $ 0.57 8.0 % September 19, 2023 425 425 Convertible notes dated February/March 2019 $ 0.25 8.0 % February 28, 2024 to March 13, 2024 750 750 Convertible notes dated June/July 2019 $ 0.10 8.0 % June 7, 2024 to July 15, 2024 295 320 Convertible notes dated July 18, 2019 $ 0.08 7.5 % July 18, 2024 700 700 Convertible notes dated September 13, 2019 $ 0.10 8.0 % September 13, 2024 50 50 Convertible notes dated January 8, 2020 $ 0.13 8.0 % January 8, 2025 1 450 450 Convertible notes dated May-August 2022 $ 0.13 8.0 % May 10, 2027 to August 3, 2027 1,668 - Total principal balance 4,538 2,895 Less current portion 625 - $ 3,913 $ 2,895 1 may one ten At December 31, 2022 2 |
Note 10 - Contingent Payment Ob
Note 10 - Contingent Payment Obligations | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Contingencies Disclosure [Text Block] | 10. Contingent Payment Obligations Secured Contingent Payment Obligation The following table provides a reconciliation of our secured contingent payment obligation measured at estimated fair market value for the years ended December 31, 2022 2021 2022 2021 Secured contingent payment obligation, beginning of year $ 37,372 $ 33,057 Change in fair value 3,336 4,315 Secured contingent payment obligation, end of year $ 40,708 $ 37,372 Our secured contingent payment obligation represents the estimated fair value of our repayment obligation to Brickell Key Investments, LP (“Brickell”) under a February 2016 2022 2021. Brickell is entitled to priority payment of 100% of proceeds received by us, after reimbursement of out-of-pocket expenses and legal contingent fees, from all patent-related actions until such time that Brickell has been paid its remaining principal of approximately $14.7 million. Thereafter, Brickell is entitled to a significant portion of remaining proceeds from all patent-related actions until such time that Brickell has been repaid its minimum return. The minimum return is determined as a multiple of the funded amount that increases over time. The estimated minimum return due to Brickell was approximately $56.9 million and $48.8 million as of December 31, 2022 2021 Brickell holds a senior security interest in the majority of our assets until such time as the specified minimum return is paid, in which case, the security interest will be released except with respect to the patents and proceeds related to specific legal actions. The security interest is enforceable by Brickell in the event that we are in default under the agreement which would occur if (i) we fail, after notice, to pay proceeds to Brickell, (ii) we become insolvent or insolvency proceedings are commenced (and not not December 31, 2022 In addition, in the event of a change in control of the Company, Brickell has the right to be paid its return as defined under the CPIA based on the transaction price for the change in control event. We have elected to measure our secured contingent payment obligation at its estimated fair value based on probability-weighted estimated cash outflows, discounted back to present value using a discount rate determined in accordance with accepted valuation methods (see Note 11 Unsecured Contingent Payment Obligations The following table provides a reconciliation of our unsecured contingent payment obligations, measured at estimated fair market value, for the years ended December 31, 2022 2021 2022 2021 Unsecured contingent payment obligations, beginning of period $ 5,691 $ 5,222 Issuance of contingent payment rights - 412 Change in fair value (602 ) 57 Unsecured contingent payment obligations, end of period $ 5,089 $ 5,691 Our unsecured contingent payment obligations represent amounts payable to others from future patent-related proceeds including (i) a termination fee due to a litigation funder (“Termination Fee”) and (ii) contingent payment rights (“CPRs”) issued to accredited investors primarily in connection with equity financings. We have elected to measure these unsecured contingent payment obligations at their estimated fair value based on probability-weighted estimated cash outflows, discounted back to present value using a discount rate determined in accordance with accepted valuation methods. The unsecured contingent payment obligations will be remeasured to fair value at each reporting period with changes recorded in the consolidated statements of comprehensive loss until the contingency is resolved (see Note 11 The Termination Fee is a result of $1.0 million in advances received under a letter agreement with a third not March 31, 2020, five not March 31, 2020, December 31, 2022 The CPRs represent the estimated fair value of rights provided to accredited investors who purchased shares of our common stock in 2020 2021 third December 31, 2020. December 31, 2021 December 31, 2022 December 31, 2022 |
Note 11 - Fair Value Measuremen
Note 11 - Fair Value Measurements | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Fair Value Disclosures [Text Block] | 11. FAIR VALUE MEASUREMENTS ASC 820, three ● Level 1: ● Level 2: 1 ● Level 3: The following table summarizes financial assets and financial liabilities carried at fair value and measured on a recurring basis as of December 31, 2022 2021 Fair Value Measurements Total Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2022: Liabilities: Secured contingent payment obligation $ 40,708 $ - $ - $ 40,708 Unsecured contingent payment obligations 5,089 - - 5,089 December 31, 2021: Liabilities: Secured contingent payment obligation 37,372 - - 37,372 Unsecured contingent payment obligations 5,691 - - 5,691 For the years ended December 31, 2022 2021 no The fair values of our secured and unsecured contingent payment obligations were estimated using a probability-weighted income approach based on various cash flow scenarios as to the outcome of patent-related actions both in terms of timing and amount, discounted to present value using a risk-adjusted rate. We used a risk-adjusted discount rate of 18.41% at December 31, 2022 The following table provides quantitative information about the significant unobservable inputs used in the measurement of fair value for both the secured and unsecured contingent payment obligations at December 31, 2022 Secured Contingent Payment Obligation Unsecured Contingent Payment Obligations Unobservable Inputs Low Weighted Average High Low Weighted Average High Estimated undiscounted cash outflows (in millions) $ 0.0 $ 59.6 $ 88.4 $ 0.0 $ 7.5 $ 10.8 Duration (in years) 1.0 2.2 2.5 1.5 2.3 2.5 Estimated probabilities 5 % 17 % 35 % 5 % 18 % 35 % We evaluate the estimates and assumptions used in determining the fair value of our contingent payment obligations each reporting period and make any adjustments prospectively based on those evaluations. Changes in any of these Level 3 |
Note 12 - Income Taxes and Tax
Note 12 - Income Taxes and Tax Status | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Income Tax Disclosure [Text Block] | 12. INCOME TAXES AND TAX STATUS Our net losses before income taxes for the years ended December 31, 2022 2021 No current or deferred tax provision or benefit was recorded in 2022 2021 A reconciliation between the provision for income taxes and the expected tax benefit using the federal statutory rate of 21% for each of the years ended December 31, 2022 2021 2022 2021 Tax benefit at statutory rate $ (2,061 ) $ (2,589 ) State tax benefit (422 ) (530 ) Increase in valuation allowance 2,416 3,368 Other 67 (249 ) $ - $ - Our deferred tax assets and liabilities relate to the following sources and differences between financial accounting and the tax bases of our assets and liabilities at December 31, 2022 2021 2022 2021 Gross deferred tax assets: Net operating loss carry-forward $ 75,470 $ 78,600 Research and development credit carry-forward 5,356 6,028 Stock compensation 1,127 356 Patents and other 1,482 1,470 Contingent payment obligations 7,033 6,341 Fixed assets (2 ) 53 Lease liabilities 1 38 90,467 92,886 Less valuation allowance (90,467 ) (92,886 ) - - Gross deferred tax liabilities: Convertible debt - - - - Net deferred tax asset $ - $ - Upon adoption of ASU 2020 06 January 1, 2021 ( 9 At December 31, 2022 2023 2037. December 31, 2022 2023 2038. Our ability to benefit from the tax credit carry-forwards could be limited under certain provisions of the Internal Revenue Code if there are ownership changes of more than 50%, 382 1986 382” 382, may 382, 50 three not December 31, 2022 382. Uncertain Tax Positions We file income tax returns in the U.S. federal jurisdiction, various state jurisdictions, and Germany. We have identified our Federal and Florida tax returns as our only major jurisdictions, as defined. The periods subject to examination for those returns are the 2003 2022 December 31, 2022 2021 2022 2021 Unrecognized tax benefits – beginning of year $ 653 $ 927 Reduction as a result of lapse of statute of limitations (15 ) (274 ) Unrecognized tax benefits – end of year $ 638 $ 653 Future changes in the unrecognized tax benefit will have no Our policy is that we recognize interest and penalties accrued on any unrecognized tax benefits as a component of our income tax expense. We do not December 31, 2022 2021 not |
Note 13 - Commitments and Conti
Note 13 - Commitments and Contingencies | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Commitments and Contingencies Disclosure [Text Block] | 13. COMMITMENTS AND CONTINGENCIES Legal Proceedings From time to time, we are subject to legal proceedings and claims which arise in the ordinary course of our business. These proceedings include patent enforcement actions initiated by us against others for the infringement of our technologies, as well as proceedings brought by others against us at the Patent Trial and Appeal Board of the U.S. Patent and Trademark Office (“PTAB”) in an attempt to invalidate certain of our patent claims. The majority of our litigation, including our PTAB proceedings, is being paid for through contingency fee arrangements with our litigation counsel as well as third third ParkerVision v. Qualcomm (Middle District of Florida-Orlando Division) - Appealed to U.S. Court of Appeals for the Federal Circuit We have appealed certain March 2022 The patent infringement case was filed in the Middle District of Florida in May 2014. February 2016 6,091,940 ‘940 March 2017, sixth September 2018, ‘940 January 2019, July 2019, ‘940 may September 2019, ‘940 January 2020. In April 2020, 19, December 2020 May 2021. October 2020, December 2020; one January 2021. May 3, 2021 July 6, 2021. In March 2021, not November December 2021. Daubert May 2021. March 2021, 2020 July 2021, No. 7,865,177 ‘177 In January 2022, three March 9, 2022, one March 22, 2022, not three April 20, 2022, 30 ParkerVision v. Apple and Qualcomm (Middle District of Florida-Jacksonville Division) In December 2015, February 2016, July 2016, March 2017, May 2017. July 2017, July 2017, March 2018, March 2018 9,118,528 August 31, 2018. July 2019, August 2020. March 2020, 19, April 2020, ParkerVision v. LG (District of New Jersey) In July 2017, ParkerVision v. Apple and Qualcomm March 2018, ParkerVision v. Apple and Qualcomm ParkerVision v. Intel (Western District of Texas) In February 2020, May 2020 June 2020, one second ParkerVision v. Intel II June 2020 July 2020 September 2020, Inter Partes Review two January 2021, two Intel v. ParkerVision (PTAB) The court issued its claim construction ruling in January 2021 February 7, 2022. April 2021, two first June 2022. In January 2022, Intel v. ParkerVision (PTAB) February 2022, first six second one second two October 2022. March 2022, December 5, 2022. March 2022, May 2022, June 2022 December 5, 2022 February 6, 2023. Beginning in November 2022, January 2023. February 6, 2023 February 7, 2023, 18 ParkerVision v. Intel II (Western District of Texas) In June 2020, ParkerVision v. Intel second July 2020, January 2021, one July 2021, Intel v. ParkerVision (PTAB) 2021 June 2021 July 2021 October 2022. February 2022, Intel II six first none first one February 7, 2023, 18 Intel v. ParkerVision (PTAB) Intel filed IPR petitions against U.S. patent 7,539,474 ‘474 7,110,444 ‘444 ParkerVision v. Intel 8,190,108 ‘108 ParkerVision v. Intel II January 2021, ‘444 ‘474 November 1, 2021 ‘474 ‘444 January 2022. ‘444 seven ‘474 ‘444 ParkerVision v. Intel July 2022, '444 In July 2021, ‘108 October 2021 April 2022. June 2022 '108 ParkerVision v. Intel Additional Patent Infringement Cases Western District of Texas ParkerVision filed a number of additional patent cases in the Western District of Texas in 2020 ten May 2021, ten second June 2021 two second November 2022 two November 2022, four We dismissed the actions against Buffalo and Zyxel in 2021 November 2022, two The court has issued claim construction recommendations for the TCL and LGE cases, in which nearly all of the claim terms were decided in our favor. In November 2022, two two TCL, et. al. v. ParkerVision (PTAB) In January 2023, November 2022. February 2023, TCL, et. al. v. ParkerVision (PTAB) In May 2021, 7,292,835 ‘835 ‘444 November 2021, December 2021, two April 2022, September 2022. November 2022, November 2022, |
Note 14 - Stock Authorization a
Note 14 - Stock Authorization and Issuance | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Equity [Text Block] | 14. STOCK AUTHORIZATION AND ISSUANCE Preferred Stock We have 15 million shares of preferred stock authorized for issuance at the direction of our board of directors (the “Board”). On November 17, 2005, December 31, 2022 Common Stock We have 175 million shares of common stock authorized for issuance as of December 31, 2022 September 2021 September 2022 As of December 31, 2022 Stock and Warrant Issuances Equity Based Financings The following table presents a summary of completed equity-based financing transactions for the years ended December 31, 2021 2022 Date Transaction # of Common Shares/ Units Sold Average Price per Share/ Unit # of Warrants Issued (in 000’s) Average Exercise Price per Warrant Net Proceeds (1) January 2021 Private placement of common stock with CPRs 2,976 $ 0.35 - - $ 1,040 March 2021 Private placement of common stock with warrants 3,231 $ 1.29 1,619 $ 1.75 $ 4,156 December 2021 Private placement of common stock with warrants 1,053 $ 0.95 526 $ 1.00 $ 1,000 November 2022 Private placement of common stock 1,000 $ 0.20 - - $ 200 December 2022 Private placement of common stock 1,000 $ 0.20 - - $ 200 ( 1 After deduction of applicable offering costs. Net proceeds are inclusive of the value of the CPRs that are classified as long-term debt (see Note 10 Private Placements In January 2021, 10 April 26, 2021 ( No. 333 255217 In March 2021, March 2026. April 26, 2021 ( No. 333 255217 In December 2021, December 2026. January 24, 2022 ( No. 333 262147 In November December 2022, April 7, 2023 April 30, 2023 ( June 30, 2023). Stock and Warrant Issuances Payment for Services In October 2022, December 2024. 2020 March 2023 March 2026. On May 22, 2020, July 14, 2020, October 30, 2020, January 12, 2021 April 6, 2021 December 31, 2021 December 31, 2022 June 2021, twelve August 2022, six not On October 30, 2020, third twelve 10 April 2021, December 31, 2021. On November 22, 2022, third twelve four three November 22, 2022 three In addition, from time to time, we issue restricted stock awards under our approved equity plans to third December 31, 2021, 2019 15 Common Stock Warrants We had outstanding warrants for the purchase of up to 10.3 million shares of our common stock as of December 31, 2022 2021 December 31, 2022 Shareholder Protection Rights Agreement On November 20, 2020, second November 21, 2005, November 20, 2020 November 20, 2023 The Rights Agreement provided for the issuance, on November 29, 2005, not not The rights initially are not may may may may not one ten may December 31, 2022 |
Note 15 - Share-based Compensat
Note 15 - Share-based Compensation | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Share-Based Payment Arrangement [Text Block] | 15. SHARE-BASED COMPENSATION For the years ended December 31, 2022 2021 third 4 As of December 31, 2022 Stock Incentive Plans 2019 We adopted a long-term incentive equity plan in August 2019 January 2021, not “2019 2019 2019 may not December 31, 2022 2019 2019 January 2023 ( 18 2011 We adopted a long-term incentive equity plan in September 2011 2014, 2016 2017, not “2011 2011 2011 no may December 31, 2022 2011 January 2023, 2011 2008 We adopted an equity incentive plan in August 2008 ( “2008 2008 not 2008 2008 no may December 31, 2022 2008 In January 2023, 2008 Restricted Stock Awards RSAs are issued as executive and employee incentive compensation and as payment for services to others. The value of the award is based on the closing price of our common stock on the date of grant. RSAs are generally immediately vested. Restricted Stock Units RSUs are issued as incentive compensation to executives, employees, and non-employee directors. Each RSU represents a right to one not one three one RSAs and RSUs The following table presents a summary of RSA and RSU activity under the 2008, 2011, 2019 December 31, 2022 Non-vested Shares Shares Weighted-Average Non-vested at beginning of year - Granted 166 0.18 Vested (166 ) 0.18 Forfeited - - Non-vested at end of year - $ - The total fair value of RSAs and RSUs vested under the Stock Plans for the years ended December 31, 2022 2021 Stock Options Stock options are issued as incentive compensation to executives, employees, consultants and non-employee directors. Stock options are generally granted with exercise prices at or above fair market value of the underlying shares at the date of grant. Fair market value of the underlying shares is determined based on observable market prices at the date of the grant. The fair value of options granted is estimated using the Black-Scholes option pricing model. Generally, fair value is determined as of the grant date. Options for employees, including executives and non-employee directors, are generally granted under the Stock Plans. The following table presents a summary of option activity under the Stock Plans for the year ended December 31, 2022 Shares Weighted- Average Exercise Price Weighted-Average Remaining Contractual Term (in years) Aggregate Intrinsic Value ($) Outstanding at beginning of year 23,215 $ 0.42 Granted 1,450 0.19 Exercised (485 ) 0.17 Forfeited/Expired - - Outstanding at end of year 24,180 0.41 3.6 $ 542 Vested at end of year 22,943 $ 0.42 3.3 $ 489 The weighted average per share fair value of options granted during the years ended December 31, 2022 2021 December 31, 2022 2021 The fair value of option grants under the Stock Plans for the years ended December 31, 2022 2021 Year ended December 31, 2022 2021 Expected option term (in years) 1 5 4 Expected volatility factor 2 143.9 - 155.9% 141.1% Risk-free interest rate 3 3.05 - 4.09% 0.36% Expected annual dividend yield 0% 0% 1 2 3 Options by Price Range The options outstanding at December 31, 2022 Options Outstanding Options Vested Range of Exercise Prices Number Outstanding at December 31, 2022 Wtd. Avg. Exercise Price Wtd. Avg. Remaining Contractual Life Number Exercisable at December 31, 2022 Wtd. Avg. Exercise Price Wtd. Avg. Remaining Contractual Life $0.171 - $0.33 10,254 $ 0.18 4.5 9,017 $ 0.18 3.7 $0.50 - $0.75 13,553 0.54 3.0 13,553 0.54 3.0 $1.98 - $2.97 373 2.02 1.5 373 2.02 1.5 24,180 $ 0.41 3.6 22,943 $ 0.42 3.3 We issue new shares of our common stock upon exercise of options or vesting of RSUs or RSAs under the Stock Plans. The shares underlying the Stock Plans are registered. Cash received from option exercises for the years ended December 31, 2022 2021 |
Note 16 - Related Party Transac
Note 16 - Related Party Transactions | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Related Party Transactions Disclosure [Text Block] | 16. RELATED PARTY TRANSACTIONS We paid approximately $0.01 million and $0.1 million in 2022 2021 one September 2006, 2022 2021 8 December 31, 2022 In May 2022, one December 2016. December 31, 2022 In August 2022, 0.2 October 2022. January 2023, 18 |
Note 17 - Concentration of Cred
Note 17 - Concentration of Credit Risk | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Concentration Risk Disclosure [Text Block] | 17. CONCENTRATIONS OF CREDIT RISK Financial instruments that potentially subject us to a concentration of credit risk principally consist of cash and cash equivalents. Cash and cash equivalents are primarily held in bank accounts and overnight investments. At times our cash balances on deposit with banks may |
Note 18 - Subsequent Events
Note 18 - Subsequent Events | 12 Months Ended |
Dec. 31, 2022 | |
Notes to Financial Statements | |
Subsequent Events [Text Block] | 18. SUBSEQUENT EVENTS In February 2023, March 2023, In February 2023, two 13 In January 2023, five may ten one may January 2023, April 7, 2023 April 30, 2023 ( June 30, 2023). On January 16, 2023, 2019 2019 |
Significant Accounting Policies
Significant Accounting Policies (Policies) | 12 Months Ended |
Dec. 31, 2022 | |
Accounting Policies [Abstract] | |
Basis of Accounting, Policy [Policy Text Block] | Basis of Presentation Our consolidated financial statements are prepared in accordance with generally accepted accounting principles in the U.S. (“GAAP”). Certain reclassifications have been made to prior period amounts to conform to the current period presentation. The consolidated financial statements include the accounts of ParkerVision, Inc. and our wholly-owned German subsidiary, ParkerVision GmbH, after elimination of all intercompany transactions and accounts. |
Use of Estimates, Policy [Policy Text Block] | Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The more significant estimates made by us include projected future cash flows and risk-adjusted discount rates for estimating the fair value of our contingent payment obligations, the volatility and estimated lives of share-based awards used in the estimate of the fair market value of share-based compensation, the assessment of recoverability of long-lived assets, the amortization periods for intangible and long-lived assets, and the valuation allowance for deferred taxes. Actual results could differ from the estimates made. We periodically evaluate estimates used in the preparation of the financial statements for continued reasonableness. Appropriate adjustments, if any, to the estimates used are made prospectively based upon such periodic evaluation. |
Cash and Cash Equivalents, Policy [Policy Text Block] | Cash and Cash Equivalents We consider cash and cash equivalents to include cash on hand, interest-bearing deposits, overnight repurchase agreements and investments with original maturities of three |
Intangible Assets, Finite-Lived, Policy [Policy Text Block] | Intangible Assets We capitalize outside legal costs and agency filing fees incurred in connection with securing the rights to our intellectual property. Patents, copyrights, and other intangible assets are amortized using the straight-line method over their estimated period of benefit. We estimate the economic lives of our patents and copyrights to be fifteen twenty may may |
Contingent Payment Obligations [Policy Text Block] | Contingent Payment Obligations We have accounted for our secured and unsecured contingent payment obligations as long-term debt in accordance with Accounting Standards Codification (“ASC”) 470 10 25, 825, 3 11 |
Lessee, Leases [Policy Text Block] | Leases We have accounted for our finance and operating leases in accordance with ASC 842, 12 For operating leases with terms greater than 12 not twelve Finance leases are included in property and equipment and other accrued expenses on the consolidated balance sheets. Finance leases are recorded as an asset and an obligation at an amount equal to the present value of the minimum lease payments during the lease term. Amortization expense and interest expense associated with finance leases are included in selling, general, and administrative expense and interest expense, respectively, on the consolidated statements of comprehensive loss. Refer to Note 7 |
Debt, Policy [Policy Text Block] | Convertible Debt We have issued debt that is convertible, at the holder’s option, into shares of our common stock at fixed conversion prices. Certain of the convertible notes were issued with conversion prices that were below market value of our common stock on the closing date resulting in a beneficial conversion feature which we recorded to equity with a corresponding discount to the debt that was amortized over the life of the notes as interest expense. Effective January 1, 2021, 2020 06 470 20 815 40 no December 15, 2023, December 15, 2020. Adoption of ASU 2020 06 |
Revenue [Policy Text Block] | Revenue Recognition We account for revenue under ASC 606, five 1 2 3 4 5 Our revenue is derived from patent licensing and settlement agreements. We have an active monitoring and enforcement program with respect to our intellectual property rights that includes seeking appropriate compensation from third may may Refer to Note 3 |
Cost of Goods and Service [Policy Text Block] | Cost of Sales Cost of sales includes amortization of intangible assets directly linked with revenue generating licensing activities. Amortization expense for intangible assets that are not |
Share-Based Payment Arrangement [Policy Text Block] | Accounting for Share-Based Compensation We have various share-based compensation programs which provide for equity awards including stock options, restricted stock units (“RSUs”) and restricted stock awards (“RSAs”). We calculate the fair value of share-based equity awards on the date of grant and recognize the calculated fair value as compensation expense over the requisite service periods of the related awards. We estimate the fair value of stock option awards using the Black-Scholes option valuation model. This valuation model requires the use of highly subjective assumptions and estimates including how long employees will retain their stock options before exercising them and the volatility of our common stock price over the expected life of the equity award. Such estimates, and the basis for our conclusions regarding such estimates, are outlined in detail in Note 15. not |
Income Tax, Policy [Policy Text Block] | Income Taxes The provision for income taxes is based on loss before taxes as reported in the accompanying consolidated statements of comprehensive loss. Deferred tax assets and liabilities are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns. Deferred tax assets and liabilities are determined based on differences between the financial statement carrying amounts and the tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. Valuation allowances are established to reduce deferred tax assets when, based on available objective evidence, it is more likely than not not not not |
Earnings Per Share, Policy [Policy Text Block] | Loss per Common Share Basic loss per common share is determined based on the weighted-average number of common shares outstanding during each year. Diluted loss per common share is the same as basic loss per common share as all potential common shares are excluded from the calculation, as their effect is anti-dilutive. The number of shares underlying outstanding options, warrants, and convertible notes at December 31, 2022 2021 2022 2021 Options outstanding 24,380 23,215 Warrants outstanding 10,346 10,346 Shares underlying convertible notes 32,734 20,157 67,460 53,718 These potential shares were excluded from the computation of diluted loss per share as their effect would have been anti-dilutive. |
Note 1 - Significant Accounti_2
Note 1 - Significant Accounting Policies (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] | 2022 2021 Options outstanding 24,380 23,215 Warrants outstanding 10,346 10,346 Shares underlying convertible notes 32,734 20,157 67,460 53,718 |
Note 4 - Prepaid Expenses (Tabl
Note 4 - Prepaid Expenses (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] | 2022 2021 Prepaid services $ 202 $ 523 Prepaid insurance 25 23 Prepaid licenses, software tools and support 15 16 Other prepaid expenses 2 12 $ 244 $ 574 |
Note 5 - Intangible Assets (Tab
Note 5 - Intangible Assets (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Schedule of Finite-Lived Intangible Assets [Table Text Block] | 2022 2021 Patents and copyrights $ 14,319 $ 14,755 Less accumulated amortization (12,960 ) (12,970 ) $ 1,359 $ 1,785 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] | 2023 $ 256 2024 243 2025 207 2026 140 2027 122 2028 and thereafter 391 Total $ 1,359 |
Note 6 - Accrued Liabilities (T
Note 6 - Accrued Liabilities (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Schedule of Accrued Liabilities [Table Text Block] | 2022 2021 Advances $ 425 $ 500 Accrued interest 56 28 Other accrued expenses 5 27 $ 486 $ 555 |
Note 7 - Leases (Tables)
Note 7 - Leases (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Lessee, Operating Lease, Supplemental Cash Flow Information [Table Text Block] | Year Ended Year Ended December 31, December 31, 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 193 $ 181 Cash received for amounts included in the measurement of sublease assets: Operating cash flows from operating subleases 120 44 |
Lease, Cost [Table Text Block] | December 31, December 31, 2022 2021 Weighted-average remaining lease term (in years): Operating leases 0.8 0.9 Operating subleases - 0.9 Weighted average discount rate Operating leases (1) 16.2 % 12.2 % |
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] | Operating Leases 2023 $ 4 Thereafter - Total undiscounted lease payments 4 Less: imputed interest - Present value of lease liabilities 4 Less: current portion (4 ) Long-term lease obligations $ - |
Note 8 - Notes Payable (Tables)
Note 8 - Notes Payable (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Schedule of Maturities of Long-Term Debt [Table Text Block] | 2023 $ 139 2024 133 2025 139 2026 144 2027 57 Total $ 612 |
Note 9 - Convertible Notes (Tab
Note 9 - Convertible Notes (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Convertible Debt [Table Text Block] | Fixed Conversion Interest December 31, Description Rate Rate Maturity Date 2022 2021 Convertible notes dated September 10, 2018 $ 0.40 8.0 % September 7, 2023 $ 200 $ 200 Convertible notes dated September 19, 2018 $ 0.57 8.0 % September 19, 2023 425 425 Convertible notes dated February/March 2019 $ 0.25 8.0 % February 28, 2024 to March 13, 2024 750 750 Convertible notes dated June/July 2019 $ 0.10 8.0 % June 7, 2024 to July 15, 2024 295 320 Convertible notes dated July 18, 2019 $ 0.08 7.5 % July 18, 2024 700 700 Convertible notes dated September 13, 2019 $ 0.10 8.0 % September 13, 2024 50 50 Convertible notes dated January 8, 2020 $ 0.13 8.0 % January 8, 2025 1 450 450 Convertible notes dated May-August 2022 $ 0.13 8.0 % May 10, 2027 to August 3, 2027 1,668 - Total principal balance 4,538 2,895 Less current portion 625 - $ 3,913 $ 2,895 |
Note 10 - Contingent Payment _2
Note 10 - Contingent Payment Obligations (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Unsecured Debt [Member] | |
Notes Tables | |
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] | 2022 2021 Unsecured contingent payment obligations, beginning of period $ 5,691 $ 5,222 Issuance of contingent payment rights - 412 Change in fair value (602 ) 57 Unsecured contingent payment obligations, end of period $ 5,089 $ 5,691 |
Secured Debt [Member] | |
Notes Tables | |
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] | 2022 2021 Secured contingent payment obligation, beginning of year $ 37,372 $ 33,057 Change in fair value 3,336 4,315 Secured contingent payment obligation, end of year $ 40,708 $ 37,372 |
Note 11 - Fair Value Measurem_2
Note 11 - Fair Value Measurements (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] | Fair Value Measurements Total Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2022: Liabilities: Secured contingent payment obligation $ 40,708 $ - $ - $ 40,708 Unsecured contingent payment obligations 5,089 - - 5,089 December 31, 2021: Liabilities: Secured contingent payment obligation 37,372 - - 37,372 Unsecured contingent payment obligations 5,691 - - 5,691 |
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] | Secured Contingent Payment Obligation Unsecured Contingent Payment Obligations Unobservable Inputs Low Weighted Average High Low Weighted Average High Estimated undiscounted cash outflows (in millions) $ 0.0 $ 59.6 $ 88.4 $ 0.0 $ 7.5 $ 10.8 Duration (in years) 1.0 2.2 2.5 1.5 2.3 2.5 Estimated probabilities 5 % 17 % 35 % 5 % 18 % 35 % |
Note 12 - Income Taxes and Ta_2
Note 12 - Income Taxes and Tax Status (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] | 2022 2021 Tax benefit at statutory rate $ (2,061 ) $ (2,589 ) State tax benefit (422 ) (530 ) Increase in valuation allowance 2,416 3,368 Other 67 (249 ) $ - $ - |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] | 2022 2021 Gross deferred tax assets: Net operating loss carry-forward $ 75,470 $ 78,600 Research and development credit carry-forward 5,356 6,028 Stock compensation 1,127 356 Patents and other 1,482 1,470 Contingent payment obligations 7,033 6,341 Fixed assets (2 ) 53 Lease liabilities 1 38 90,467 92,886 Less valuation allowance (90,467 ) (92,886 ) - - Gross deferred tax liabilities: Convertible debt - - - - Net deferred tax asset $ - $ - |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] | 2022 2021 Unrecognized tax benefits – beginning of year $ 653 $ 927 Reduction as a result of lapse of statute of limitations (15 ) (274 ) Unrecognized tax benefits – end of year $ 638 $ 653 |
Note 14 - Stock Authorization_2
Note 14 - Stock Authorization and Issuance (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Summary of Equity Offerings [Table Text Block] | Date Transaction # of Common Shares/ Units Sold Average Price per Share/ Unit # of Warrants Issued (in 000’s) Average Exercise Price per Warrant Net Proceeds (1) January 2021 Private placement of common stock with CPRs 2,976 $ 0.35 - - $ 1,040 March 2021 Private placement of common stock with warrants 3,231 $ 1.29 1,619 $ 1.75 $ 4,156 December 2021 Private placement of common stock with warrants 1,053 $ 0.95 526 $ 1.00 $ 1,000 November 2022 Private placement of common stock 1,000 $ 0.20 - - $ 200 December 2022 Private placement of common stock 1,000 $ 0.20 - - $ 200 |
Note 15 - Share-based Compens_2
Note 15 - Share-based Compensation (Tables) | 12 Months Ended |
Dec. 31, 2022 | |
Notes Tables | |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] | Non-vested Shares Shares Weighted-Average Non-vested at beginning of year - Granted 166 0.18 Vested (166 ) 0.18 Forfeited - - Non-vested at end of year - $ - |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] | Shares Weighted- Average Exercise Price Weighted-Average Remaining Contractual Term (in years) Aggregate Intrinsic Value ($) Outstanding at beginning of year 23,215 $ 0.42 Granted 1,450 0.19 Exercised (485 ) 0.17 Forfeited/Expired - - Outstanding at end of year 24,180 0.41 3.6 $ 542 Vested at end of year 22,943 $ 0.42 3.3 $ 489 |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | Year ended December 31, 2022 2021 Expected option term (in years) 1 5 4 Expected volatility factor 2 143.9 - 155.9% 141.1% Risk-free interest rate 3 3.05 - 4.09% 0.36% Expected annual dividend yield 0% 0% |
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block] | Options Outstanding Options Vested Range of Exercise Prices Number Outstanding at December 31, 2022 Wtd. Avg. Exercise Price Wtd. Avg. Remaining Contractual Life Number Exercisable at December 31, 2022 Wtd. Avg. Exercise Price Wtd. Avg. Remaining Contractual Life $0.171 - $0.33 10,254 $ 0.18 4.5 9,017 $ 0.18 3.7 $0.50 - $0.75 13,553 0.54 3.0 13,553 0.54 3.0 $1.98 - $2.97 373 2.02 1.5 373 2.02 1.5 24,180 $ 0.41 3.6 22,943 $ 0.42 3.3 |
Note 1 - Significant Accounti_3
Note 1 - Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Long-Term Debt, Total | $ 612 | |
Additional Paid in Capital, Total | 391,724 | $ 387,865 |
Retained Earnings (Accumulated Deficit), Total | (443,225) | $ (433,412) |
Accounting Standards Update 2020-06 [Member] | ||
Long-Term Debt, Total | 800 | |
Additional Paid in Capital, Total | 1,100 | |
Retained Earnings (Accumulated Deficit), Total | $ 300 | |
Intellectual Property [Member] | Minimum [Member] | ||
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years | |
Intellectual Property [Member] | Maximum [Member] | ||
Finite-Lived Intangible Asset, Useful Life (Year) | 20 years |
Note 1 - Significant Accounti_4
Note 1 - Significant Accounting Policies - Schedule of Antidilutive Securities Excluded From Earnings Per Share (Details) - shares shares in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Antidilutive securities (in shares) | 67,460 | 53,718 |
Share-Based Payment Arrangement, Option [Member] | ||
Antidilutive securities (in shares) | 24,380 | 23,215 |
Warrant [Member] | ||
Antidilutive securities (in shares) | 10,346 | 10,346 |
Convertible Debt Securities [Member] | ||
Antidilutive securities (in shares) | 32,734 | 20,157 |
Note 2 - Liquidity and Going _2
Note 2 - Liquidity and Going Concern (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended | ||
Mar. 28, 2023 | Jan. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Net Income (Loss) Attributable to Parent, Total | $ (9,813) | $ (12,330) | ||
Net Cash Provided by (Used in) Operating Activities, Total | (2,959) | (7,702) | ||
Retained Earnings (Accumulated Deficit), Total | (443,225) | (433,412) | ||
Cash and Cash Equivalents, at Carrying Value, Total | $ 109 | $ 1,030 | ||
Subsequent Event [Member] | ||||
Proceeds from Issuance of Debt and Equity | $ 800 | |||
Proceeds from Patent License and Settlement Agreement | $ 25,000 |
Note 3 - Revenue (Details Textu
Note 3 - Revenue (Details Textual) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Contract with Customer, Liability, Revenue Recognized | $ 930 | $ 140 |
Contract with Customer, Liability, Total | 0 | |
Contract with Customer, Asset, before Allowance for Credit Loss | $ 0 |
Note 4 - Prepaid Expenses (Deta
Note 4 - Prepaid Expenses (Details Textual) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Prepaid Services | $ 202 | $ 523 |
Pre Paid Consulting Services [Member] | ||
Prepaid Services | $ 200 | $ 500 |
Note 4 - Prepaid Expenses - Pre
Note 4 - Prepaid Expenses - Prepaid Expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Prepaid services | $ 202 | $ 523 |
Prepaid insurance | 25 | 23 |
Prepaid licenses, software tools and support | 15 | 16 |
Other prepaid expenses | 2 | 12 |
Prepaid Expense, Current | $ 244 | $ 574 |
Note 5 - Intangible Assets (Det
Note 5 - Intangible Assets (Details Textual) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Amortization of Intangible Assets | $ 300 | $ 350 |
Gain (Loss) on Disposition of Intangible Assets | $ (100) | $ (30) |
Note 5 - Intangible Assets - In
Note 5 - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Patents and copyrights | $ 14,319 | $ 14,755 |
Less accumulated amortization | (12,960) | (12,970) |
Total | $ 1,359 | $ 1,785 |
Note 5 - Intangible Assets - Sc
Note 5 - Intangible Assets - Schedule of Finite Lived Intangible Assets, Future Amortization Expense (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
2023 | $ 256 | |
2024 | 243 | |
2025 | 207 | |
2026 | 140 | |
2027 | 122 | |
2028 and thereafter | 391 | |
Total | $ 1,359 | $ 1,785 |
Note 6 - Accrued Liabilities -
Note 6 - Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Advances | $ 425 | $ 500 |
Accrued interest | 56 | 28 |
Other accrued expenses | 5 | 27 |
Accrued Liabilities | $ 486 | $ 555 |
Note 7 - Leases (Details Textua
Note 7 - Leases (Details Textual) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Operating Lease, Cost | $ 40 | $ 40 |
Interest and Other Income [Member] | ||
Rental Income, Nonoperating | $ 110 | $ 50 |
Note 7 - Leases - Supplemental
Note 7 - Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Operating cash flows from operating leases | $ 193 | $ 181 |
Operating cash flows from operating subleases | $ 120 | $ 44 |
Note 7 - Leases - Operating Lea
Note 7 - Leases - Operating Lease, Lease Cost (Details) | 12 Months Ended | ||
Dec. 31, 2021 | Dec. 31, 2022 | ||
Operating leases (Year) | 10 months 24 days | 9 months 18 days | |
Operating subleases (Year) | 10 months 24 days | ||
Operating leases (1) | [1] | 12.20% | 16.20% |
[1]Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2019. |
Note 7 - Leases - Lessee Operat
Note 7 - Leases - Lessee Operating Lease Liability Maturity (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
2023 | $ 4 | |
Thereafter | 0 | |
Total undiscounted lease payments | 4 | |
Less: imputed interest | 0 | |
Present value of lease liabilities | 4 | |
Less: current portion | (4) | $ (155) |
Operating lease liabilities, net of current portion | $ 0 | $ 4 |
Note 8 - Notes Payable (Details
Note 8 - Notes Payable (Details Textual) - USD ($) | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Convertible Debt [Member] | ||
Debt Instrument, Interest Rate, Stated Percentage | 12% | |
Interest Expense, Debt, Total | $ 300,000 | $ 260,000 |
Notes Payable, Fair Value Disclosure | 470,000 | |
Promissory Notes [Member] | Unsecured Debt [Member] | Sterne Kessler Goldstein Fox Pllc [Member] | ||
Debt Instrument, Face Amount | $ 600,000 | |
Debt Instrument, Interest Rate, Stated Percentage | 4% | |
Debt Instrument, Periodic Payment, Total | $ 12,500 | |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | 20,000 | |
Interest Expense, Debt, Total | $ 30,000 | $ 30,000 |
Note 8 - Notes Payable - Schedu
Note 8 - Notes Payable - Schedule of Maturities of Long-Term Debt (Details) $ in Thousands | Dec. 31, 2022 USD ($) |
2023 | $ 139 |
2024 | 133 |
2025 | 139 |
2026 | 144 |
2027 | 57 |
Total | $ 612 |
Note 9 - Convertible Notes (Det
Note 9 - Convertible Notes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended | ||
Jan. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | |
Convertible Debt [Member] | ||||
Debt Instrument, Term (Year) | 5 years | |||
Debt Instrument, Interest Rate, Stated Percentage | 12% | |||
Debt Conversion, Converted Instrument, Amount | $ 30 | $ 970 | ||
Debt Conversion, Converted Instrument, Shares Issued (in shares) | 300,000 | 3,400,000 | ||
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 0.10 | $ 0.29 | ||
Debt Instrument, Convertible, Number of Equity Instruments | 32,700,000 | |||
Interest Expense, Debt, Total | $ 300 | $ 260 | ||
Notes Payable, Fair Value Disclosure | 470 | |||
Convertible Debt [Member] | Fair Value, Inputs, Level 2 [Member] | ||||
Notes Payable, Fair Value Disclosure | $ 3,400 | |||
Convertible Debt [Member] | Subsequent Event [Member] | ||||
Debt Instrument, Term (Year) | 5 years | |||
Debt Instrument, Interest Rate, Stated Percentage | 9% | |||
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 0.16 | |||
Proceeds from Convertible Debt | $ 700 | |||
Convertible Debt [Member] | Five-year Convertible Promissory Notes [Member] | ||||
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 0.13 | |||
Debt Instrument, Face Amount | $ 1,700 | |||
Convertible Debt [Member] | Conversion and Payment of Interest-in-kind on Convertible Debt [Member] | ||||
Debt Conversion, Converted Instrument, Shares Issued (in shares) | 1,203,000 | 272,000 | ||
Convertible Debt [Member] | Debt Instrument, Redemption, Period One [Member] | ||||
Debt Instrument, Redemption Price, Percentage | 25% | |||
Convertible Debt [Member] | Debt Instrument, Redemption, Period Two [Member] | ||||
Debt Instrument, Redemption Price, Percentage | 20% | |||
Convertible Debt [Member] | Debt Instrument, Redemption, Period Three [Member] | ||||
Debt Instrument, Redemption Price, Percentage | 15% | |||
Convertible Debt [Member] | Debt Instrument, Redemption, Period Four [Member] | ||||
Debt Instrument, Redemption Price, Percentage | 10% | |||
Convertible Debt [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ||||
Debt Instrument, Convertible, Beneficial Conversion Feature | $ 800 | |||
Convertible Notes Dated E [Member] | ||||
Debt Instrument, Interest Rate, Stated Percentage | 2% |
Note 9 - Convertible Notes - Sc
Note 9 - Convertible Notes - Schedule Of Convertible Notes Payable (Details) - USD ($) $ / shares in Units, $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Convertible Debt, Total | $ 4,538 | $ 2,895 |
Less current portion | 625 | 0 |
Convertible Debt, Noncurrent | $ 3,913 | 2,895 |
Convertible Notes dated September 10, 2018 [Member] | ||
Fixed Conversion Rate (in dollars per share) | $ 0.40 | |
Effective Interest Rate | 8% | |
Convertible Debt, Total | $ 200 | 200 |
Convertible Note Dated September 19, 2018 [Member] | ||
Fixed Conversion Rate (in dollars per share) | $ 0.57 | |
Effective Interest Rate | 8% | |
Convertible Debt, Total | $ 425 | 425 |
Convertible Notes Dated February/March 2019 [Member] | ||
Fixed Conversion Rate (in dollars per share) | $ 0.25 | |
Effective Interest Rate | 8% | |
Convertible Debt, Total | $ 750 | 750 |
Convertible Notes Dated June/July 2019 [Member] | ||
Fixed Conversion Rate (in dollars per share) | $ 0.10 | |
Effective Interest Rate | 8% | |
Convertible Debt, Total | $ 295 | 320 |
Convertible Notes Dated July 18, 2019 [Member] | ||
Fixed Conversion Rate (in dollars per share) | $ 0.08 | |
Effective Interest Rate | 7.50% | |
Convertible Debt, Total | $ 700 | 700 |
Convertible Notes Dated September 13, 2019 [Member] | ||
Fixed Conversion Rate (in dollars per share) | $ 0.10 | |
Effective Interest Rate | 8% | |
Convertible Debt, Total | $ 50 | 50 |
Convertible Notes Dated January 8, 2020 [Member] | ||
Fixed Conversion Rate (in dollars per share) | $ 0.13 | |
Effective Interest Rate | 8% | |
Convertible Debt, Total | $ 450 | 450 |
Convertible Notes Dated May-August 2022 [Member] | ||
Fixed Conversion Rate (in dollars per share) | $ 0.13 | |
Effective Interest Rate | 8% | |
Convertible Debt, Total | $ 1,668 | $ 0 |
Note 10 - Contingent Payment _3
Note 10 - Contingent Payment Obligations (Details Textual) - USD ($) $ in Thousands | 12 Months Ended | 24 Months Ended | 83 Months Ended | ||
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2022 | Mar. 31, 2020 | |
Repayments of Debt | $ 3,300 | ||||
Contingent Payment Obligation, Remaining Principal Amount | $ 14,700 | 14,700 | |||
Contingent Payment Obligation, Minimum Return | 56,900 | $ 48,800 | 56,900 | ||
Common Stock With Contingent Payment Rights [Member] | |||||
Proceeds from Issuance of Common Stock | 0 | 1,100 | |||
Contingent Payment Rights [Member] | |||||
Proceeds from Issuance of Common Stock | $ 400 | ||||
Maximum Amount of Net Proceeds Recoverable | 10,000 | 10,000 | |||
Amount Investors' Subscription is Divided By | 10,000 | 10,000 | |||
Aggregate Proceeds From Contingent Payment Rights | 5,800 | 5,800 | |||
Termination Fee [Member] | Unsecured Debt [Member] | |||||
Advances From Funder | $ 1,000 | ||||
Loss Contingency, Estimate of Possible Loss | $ 2,400 | 2,400 | $ 5,000 | ||
Contingent Payment Obligation [Member] | Minimum [Member] | |||||
Proceeds From Patent-Related Actions, Percent | 100% | ||||
Contingent Payment Rights [Member] | Unsecured Debt [Member] | |||||
Debt Instrument, Fair Value Disclosure, Total | $ 2,700 | 2,700 | |||
Brickell [Member] | |||||
Proceeds from Issuance of Debt | $ 0 | $ 18,000 |
Note 10 - Contingent Payment _4
Note 10 - Contingent Payment Obligations - Reconciliation Of Secured Contingent Obligation At Fair Value (Details) - Contingent Payment Obligation [Member] - Secured Debt [Member] - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Secured contingent payment obligation, beginning of year | $ 37,372 | $ 33,057 |
Change in fair value | 3,336 | 4,315 |
Secured contingent payment obligation, end of year | $ 40,708 | $ 37,372 |
Note 10 - Contingent Payment _5
Note 10 - Contingent Payment Obligations - Reconciliation Of Unsecured Contingent Obligation At Fair Value (Details) - Unsecured Debt [Member] - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Secured contingent payment obligation, beginning of year | $ 5,691 | $ 5,222 |
Issuance of contingent payment rights | 0 | 412 |
Change in fair value | (602) | 57 |
Secured contingent payment obligation, end of year | $ 5,089 | $ 5,691 |
Note 11 - Fair Value Measurem_3
Note 11 - Fair Value Measurements (Details Textual) - Secured Debt [Member] | Dec. 31, 2022 |
Measurement Input, Discount Rate [Member] | |
Debt Instrument, Measurement Input | 0.1841 |
Measurement Input, Risk Free Interest Rate [Member] | |
Debt Instrument, Measurement Input | 0.0441 |
Measurement Input, Entity Credit Risk [Member] | |
Debt Instrument, Measurement Input | 0.08 |
Litigation Inherent Risk [Member] | |
Debt Instrument, Measurement Input | 0.06 |
Note 11 - Fair Value Measurem_4
Note 11 - Fair Value Measurements - Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Secured Contingent Payment Obligation [Member] | ||
Liabilities | $ 40,708 | $ 37,372 |
Secured Contingent Payment Obligation [Member] | Fair Value, Inputs, Level 1 [Member] | ||
Liabilities | 0 | 0 |
Secured Contingent Payment Obligation [Member] | Fair Value, Inputs, Level 2 [Member] | ||
Liabilities | 0 | 0 |
Secured Contingent Payment Obligation [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Liabilities | 40,708 | 37,372 |
Unsecured Contingent Payment Obligation [Member] | ||
Liabilities | 5,089 | 5,691 |
Unsecured Contingent Payment Obligation [Member] | Fair Value, Inputs, Level 1 [Member] | ||
Liabilities | 0 | 0 |
Unsecured Contingent Payment Obligation [Member] | Fair Value, Inputs, Level 2 [Member] | ||
Liabilities | 0 | 0 |
Unsecured Contingent Payment Obligation [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Liabilities | $ 5,089 | $ 5,691 |
Note 11 - Fair Value Measurem_5
Note 11 - Fair Value Measurements - Quantitative Information (Details) - Fair Value, Inputs, Level 3 [Member] | Dec. 31, 2022 USD ($) yr |
Estimated Undiscounted Cash Outflows [Member] | Secured Debt [Member] | Minimum [Member] | |
Measurement input | $ | 0 |
Estimated Undiscounted Cash Outflows [Member] | Secured Debt [Member] | Weighted Average [Member] | |
Measurement input | $ | 59,600 |
Estimated Undiscounted Cash Outflows [Member] | Secured Debt [Member] | Maximum [Member] | |
Measurement input | $ | 88,400 |
Estimated Undiscounted Cash Outflows [Member] | Unsecured Debt [Member] | Minimum [Member] | |
Measurement input | $ | 0 |
Estimated Undiscounted Cash Outflows [Member] | Unsecured Debt [Member] | Weighted Average [Member] | |
Measurement input | $ | 7,500 |
Estimated Undiscounted Cash Outflows [Member] | Unsecured Debt [Member] | Maximum [Member] | |
Measurement input | $ | 10,800 |
Measurement Input, Expected Term [Member] | Secured Debt [Member] | Minimum [Member] | |
Measurement input | yr | 1 |
Measurement Input, Expected Term [Member] | Secured Debt [Member] | Weighted Average [Member] | |
Measurement input | yr | 2.2 |
Measurement Input, Expected Term [Member] | Secured Debt [Member] | Maximum [Member] | |
Measurement input | yr | 2.5 |
Measurement Input, Expected Term [Member] | Unsecured Debt [Member] | Minimum [Member] | |
Measurement input | yr | 1.5 |
Measurement Input, Expected Term [Member] | Unsecured Debt [Member] | Weighted Average [Member] | |
Measurement input | yr | 2.3 |
Measurement Input, Expected Term [Member] | Unsecured Debt [Member] | Maximum [Member] | |
Measurement input | yr | 2.5 |
Estimated Probabilities [Member] | Secured Debt [Member] | Minimum [Member] | |
Measurement input | 0.05 |
Estimated Probabilities [Member] | Secured Debt [Member] | Weighted Average [Member] | |
Measurement input | 0.17 |
Estimated Probabilities [Member] | Secured Debt [Member] | Maximum [Member] | |
Measurement input | 0.35 |
Estimated Probabilities [Member] | Unsecured Debt [Member] | Minimum [Member] | |
Measurement input | 0.05 |
Estimated Probabilities [Member] | Unsecured Debt [Member] | Weighted Average [Member] | |
Measurement input | 0.18 |
Estimated Probabilities [Member] | Unsecured Debt [Member] | Maximum [Member] | |
Measurement input | 0.35 |
Note 12 - Income Taxes and Ta_3
Note 12 - Income Taxes and Tax Status (Details Textual) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Current Income Tax Expense (Benefit), Total | $ 0 | $ 0 |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21% | 21% |
Operating Loss Carryforwards | $ 300,800 | |
Operating Loss Carryforwards, Subject To Expiration | $ 260,100 | |
Open Tax Year | 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 | |
Research Tax Credit Carryforward [Member] | ||
Tax Credit Carryforward, Amount | $ 5,400 |
Note 12 - Income Taxes and Ta_4
Note 12 - Income Taxes and Tax Status - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Tax benefit at statutory rate | $ (2,061) | $ (2,589) |
State tax benefit | (422) | (530) |
Increase in valuation allowance | 2,416 | 3,368 |
Other | $ 67 | $ (249) |
Note 12 - Income Taxes and Ta_5
Note 12 - Income Taxes and Tax Status - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 |
Net operating loss carry-forward | $ 75,470 | $ 78,600 |
Research and development credit carry-forward | 5,356 | 6,028 |
Stock compensation | 1,127 | 356 |
Patents and other | 1,482 | 1,470 |
Contingent payment obligations | 7,033 | 6,341 |
Fixed assets, tax liability | (2) | |
Fixed assets, tax asset | 53 | |
Lease liabilities | 1 | 38 |
Deferred Tax Assets, Gross | 90,467 | 92,886 |
Less valuation allowance | (90,467) | (92,886) |
Convertible debt | 0 | 0 |
Net deferred tax asset | $ 0 | $ 0 |
Note 12 - Income Taxes and Ta_6
Note 12 - Income Taxes and Tax Status - Schedule of Unrecognized Tax Beneifts (Details) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2022 | Dec. 31, 2021 | |
Unrecognized tax benefits – beginning of year | $ 653 | $ 927 |
Reduction as a result of lapse of statute of limitations | (15) | (274) |
Unrecognized tax benefits – end of year | $ 638 | $ 653 |
Note 13 - Commitments and Con_2
Note 13 - Commitments and Contingencies (Details Textual) $ in Billions | 1 Months Ended | |||||||||
Jan. 31, 2022 | Jul. 31, 2020 | May 31, 2020 | Apr. 30, 2020 USD ($) | Feb. 29, 2020 | Jul. 31, 2019 | Mar. 31, 2018 | Jul. 31, 2017 | Mar. 31, 2017 | Dec. 31, 2015 | |
Parkervision V. Qualcomm Middle District Of Florida [Member] | ||||||||||
Gain Contingency, Patents Found Infringed upon, Number | 3 | |||||||||
Gain Contingency, Patents Allegedly Infringed upon, Number | 6 | |||||||||
Loss Contingency, Patents Split Decision, Number | 2 | |||||||||
Loss Contingency, Patents Allegedly Infringed, Seeking Invalidation, Number | 4 | |||||||||
Claim Construction, Number | 7 | |||||||||
Gain Contingency Damages Sought | $ 1.3 | |||||||||
Parkervision V. Qualcomm Middle District Of Florida [Member] | Maximum [Member] | ||||||||||
Claim Construction, Number | 10 | |||||||||
Parkervision V. Apple and Qualcomm Middle District of Florida [Member] | ||||||||||
Gain Contingency, Patents Allegedly Infringed upon, Number | 4 | 4 | ||||||||
Claim Construction, Number | 2 | |||||||||
Loss Contingency, Patents Number, Motion To Dismiss | 3 | |||||||||
Parkervision V. Apple and Qualcomm Middle District of Florida [Member] | Maximum [Member] | ||||||||||
Claim Construction, Number | 6 | |||||||||
Parkervision V. LG Electronics [Member] | ||||||||||
Gain Contingency, Patents Allegedly Infringed upon, Number | 4 | |||||||||
Parkervision V. Intel Western District Of Texas [Member] | ||||||||||
Gain Contingency, Patents Allegedly Infringed upon, Number | 2 | 8 | ||||||||
Number of Asserted Patents | 6 | |||||||||
Parkervision V. Intel Ii Western District Of Texas [Member] | ||||||||||
Gain Contingency, Patents Allegedly Infringed upon, Number | 2 | |||||||||
Additional Number Of Patent Subject To Inter Parter Review | 2 |
Note 14 - Stock Authorization_3
Note 14 - Stock Authorization and Issuance (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 2 Months Ended | 12 Months Ended | 83 Months Ended | ||||||||||||||||||||
Nov. 22, 2022 | Oct. 30, 2020 | Jul. 14, 2020 | Nov. 21, 2005 | Dec. 31, 2022 | Nov. 30, 2022 | Oct. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Jan. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022 | Sep. 16, 2022 | Sep. 30, 2021 | Nov. 20, 2020 | Jul. 31, 2020 | Nov. 17, 2005 | ||||
Preferred Stock, Shares Authorized (in shares) | 15,000,000 | 15,000,000 | 15,000,000 | 15,000,000 | ||||||||||||||||||||
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 0 | 0 | 0 | 0 | ||||||||||||||||||||
Common Stock, Shares Authorized (in shares) | 175,000,000 | 150,000,000 | 175,000,000 | 175,000,000 | 150,000,000 | 175,000,000 | 175,000,000 | 150,000,000 | 140,000,000 | |||||||||||||||
Repayments of Debt | $ 3,300 | |||||||||||||||||||||||
Class of Warrant or Right, Outstanding (in shares) | 10,300,000 | 10,300,000 | 10,300,000 | 10,300,000 | 10,300,000 | 10,300,000 | ||||||||||||||||||
Stock Issued During Period, Value, Issued for Services | $ 59 | |||||||||||||||||||||||
Class of Warrant or Right, Weighted Average Remaining Life (Year) | 2 years 1 month 6 days | |||||||||||||||||||||||
Estimate of Fair Value Measurement [Member] | Additional Paid-in Capital [Member] | ||||||||||||||||||||||||
Warrants and Rights Outstanding | $ 3,200 | $ 3,200 | $ 3,200 | $ 3,200 | ||||||||||||||||||||
Third Party Providing Consulting Services [Member] | ||||||||||||||||||||||||
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 200,000 | |||||||||||||||||||||||
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) | $ 0.21 | |||||||||||||||||||||||
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Value | $ 30 | |||||||||||||||||||||||
Intro Act [Member] | ||||||||||||||||||||||||
Stock Issued During Period, Shares, Issued for Services (in shares) | 50,000 | 150,000 | 100,000 | |||||||||||||||||||||
Stock Issued During Period, Value, Issued for Services | $ 30 | $ 120 | $ 100 | $ 50 | ||||||||||||||||||||
Securities Purchase Agreements [Member] | ||||||||||||||||||||||||
Stock Issued During Period, Shares, Issued for Services (in shares) | 70,000 | 35,000 | ||||||||||||||||||||||
Stock Issued During Period, Value, Issued for Services | $ 20 | $ 40 | ||||||||||||||||||||||
Securities Purchase Agreements [Member] | Contingent Payment Rights [Member] | ||||||||||||||||||||||||
Unsecured Debt, Total | 20 | |||||||||||||||||||||||
Debt Instrument, Fair Value Disclosure, Total | $ 100 | |||||||||||||||||||||||
Warrants With Extended Expiration Dates [Member] | ||||||||||||||||||||||||
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 1 | |||||||||||||||||||||||
Class of Warrant or Right, Outstanding (in shares) | 200,000 | |||||||||||||||||||||||
Fair Value Adjustment of Warrants | $ 20 | |||||||||||||||||||||||
Shareholder Protection Rights Agreement [Member] | ||||||||||||||||||||||||
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 0 | 0 | 0 | 0 | ||||||||||||||||||||
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 14.50 | $ 8.54 | ||||||||||||||||||||||
Protection Rights, Separate from Common Stock after Acquisition of Outstanding Shares, Threshold Percentage | 15% | |||||||||||||||||||||||
Preferred Stock, Redemption Price Per Share (in dollars per share) | $ 0.01 | |||||||||||||||||||||||
Weighted Average [Member] | ||||||||||||||||||||||||
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 0.75 | $ 0.75 | $ 0.75 | $ 0.75 | ||||||||||||||||||||
Private Placement With Contingent Purchase Rights [Member] | ||||||||||||||||||||||||
Stock Issued During Period, Shares, New Issues (in shares) | 1,000,000 | 1,053,000 | 2,976,430 | |||||||||||||||||||||
Shares Issued, Price Per Share (in dollars per share) | $ 0.20 | $ 0.95 | $ 0.35 | $ 0.95 | ||||||||||||||||||||
Stock Issued During Period, Value, New Issues | $ 200 | [1] | $ 1,000 | [1] | $ 1,000 | |||||||||||||||||||
Issuance of Warrants, Number (in shares) | 0 | 526,000 | ||||||||||||||||||||||
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 0 | $ 1 | 1 | |||||||||||||||||||||
Contingent Payment Obligation [Member] | ||||||||||||||||||||||||
Proceeds from Issuance of Common Stock | $ 400 | |||||||||||||||||||||||
Private Placement With Warrants [Member] | ||||||||||||||||||||||||
Stock Issued During Period, Shares, New Issues (in shares) | 1,000,000 | 1,052,631 | 3,230,942 | |||||||||||||||||||||
Shares Issued, Price Per Share (in dollars per share) | $ 0.20 | $ 0.95 | $ 1.29 | 0.20 | 0.20 | 0.95 | 0.20 | |||||||||||||||||
Stock Issued During Period, Value, New Issues | $ 200 | [1] | $ 1,000 | $ 4,200 | ||||||||||||||||||||
Issuance of Warrants, Number (in shares) | 0 | 526,315 | 1,619,289 | |||||||||||||||||||||
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 0 | $ 1 | $ 1.75 | $ 0 | 0 | $ 1 | 0 | |||||||||||||||||
Securities Purchase Agreements [Member] | ||||||||||||||||||||||||
Stock Issued During Period, Shares, New Issues (in shares) | 2,000,000 | |||||||||||||||||||||||
Shares Issued, Price Per Share (in dollars per share) | $ 0.20 | $ 0.20 | $ 0.20 | $ 0.20 | ||||||||||||||||||||
Stock Issued During Period, Value, New Issues | $ 400 | |||||||||||||||||||||||
Liquidated Damages Percentage | 1% | |||||||||||||||||||||||
Liquidated Damages Amount | $ 20 | |||||||||||||||||||||||
Securities Purchase Agreements [Member] | Maximum [Member] | ||||||||||||||||||||||||
Liquidated Damages Percentage | 6% | |||||||||||||||||||||||
Shareholder Approved Equity Compensation Plans [Member] | ||||||||||||||||||||||||
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | 360,000 | 360,000 | 360,000 | 360,000 | ||||||||||||||||||||
Convertible Debt [Member] | ||||||||||||||||||||||||
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | 32,700,000 | 32,700,000 | 32,700,000 | 32,700,000 | ||||||||||||||||||||
Conversion and Payment of Interest-in-kind on Convertible Debt [Member] | ||||||||||||||||||||||||
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | 2,000,000 | 2,000,000 | 2,000,000 | 2,000,000 | ||||||||||||||||||||
Secured Debt [Member] | Private Placement With Warrants [Member] | Mintz, Levin, Cohn, Ferris, Glovsky, and Popeo, P.C. [Member] | ||||||||||||||||||||||||
Repayments of Debt | $ 3,000 | |||||||||||||||||||||||
Warrants and Options [member] | ||||||||||||||||||||||||
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | 34,700,000 | 34,700,000 | 34,700,000 | 34,700,000 | ||||||||||||||||||||
Restricted Stock [Member] | Long Term Incentive Plan 2019 [Member] | ||||||||||||||||||||||||
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 217,143 | |||||||||||||||||||||||
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested | $ 300 | |||||||||||||||||||||||
Series E Preferred Stock [Member] | ||||||||||||||||||||||||
Preferred Stock, Shares Authorized (in shares) | 100,000 | |||||||||||||||||||||||
[1]After deduction of applicable offering costs. Net proceeds are inclusive of the value of the CPRs that are classified as long-term debt (see Note 10). |
Note 14 - Stock Authorization_4
Note 14 - Stock Authorization and Issuance - Summary of Equity Offerings (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | ||||||||
Dec. 31, 2022 | Nov. 30, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Jan. 31, 2021 | |||||
Private Placement [Member] | |||||||||
Stock Issued During Period, Shares, New Issues (in shares) | 2,976,000 | ||||||||
Shares Issued, Price Per Share (in dollars per share) | $ 0.35 | ||||||||
Number of warrants issued (in shares) | 0 | ||||||||
Average exercise price per warrant (in dollars per share) | $ 0 | ||||||||
Stock Issued During Period, Value, New Issues | [1] | $ 1,040 | |||||||
Private Placement and Amendment To Add Contingent Purchase Rights [Member] | |||||||||
Stock Issued During Period, Shares, New Issues (in shares) | 3,231,000 | ||||||||
Shares Issued, Price Per Share (in dollars per share) | $ 1.29 | ||||||||
Number of warrants issued (in shares) | 1,619,000 | ||||||||
Average exercise price per warrant (in dollars per share) | $ 1.75 | ||||||||
Stock Issued During Period, Value, New Issues | [1] | $ 4,156 | |||||||
Private Placement With Contingent Purchase Rights [Member] | |||||||||
Stock Issued During Period, Shares, New Issues (in shares) | 1,000,000 | 1,053,000 | 2,976,430 | ||||||
Shares Issued, Price Per Share (in dollars per share) | $ 0.20 | $ 0.95 | $ 0.35 | ||||||
Number of warrants issued (in shares) | 0 | 526,000 | |||||||
Average exercise price per warrant (in dollars per share) | $ 0 | $ 1 | |||||||
Stock Issued During Period, Value, New Issues | $ 200 | [1] | $ 1,000 | [1] | $ 1,000 | ||||
Private Placement With Warrants [Member] | |||||||||
Stock Issued During Period, Shares, New Issues (in shares) | 1,000,000 | 1,052,631 | 3,230,942 | ||||||
Shares Issued, Price Per Share (in dollars per share) | $ 0.20 | $ 0.95 | $ 1.29 | ||||||
Number of warrants issued (in shares) | 0 | 526,315 | 1,619,289 | ||||||
Average exercise price per warrant (in dollars per share) | $ 0 | $ 1 | $ 1.75 | ||||||
Stock Issued During Period, Value, New Issues | $ 200 | [1] | $ 1,000 | $ 4,200 | |||||
[1]After deduction of applicable offering costs. Net proceeds are inclusive of the value of the CPRs that are classified as long-term debt (see Note 10). |
Note 15 - Share-based Compens_3
Note 15 - Share-based Compensation (Details Textual) - USD ($) | 12 Months Ended | ||
Dec. 31, 2022 | Dec. 31, 2021 | Jan. 31, 2021 | |
Share-Based Payment Arrangement, Expense | $ 3,100,000 | $ 3,300,000 | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | $ 200,000 | ||
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 3 months 18 days | ||
Restricted Stock Units (RSUs) [Member] | Non Employee [Member] | |||
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 1 year | ||
Restricted Stock Units (RSUs) [Member] | Minimum [Member] | |||
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 1 year | ||
Restricted Stock Units (RSUs) [Member] | Maximum [Member] | |||
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years | ||
Restricted Stock Awards and Restricted Stock Units (RSUs) [Member] | |||
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ 30,000 | $ 600,000 | |
Share-Based Payment Arrangement, Option [Member] | |||
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ 0.17 | $ 0.46 | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value | $ 3,000,000 | $ 3,400,000 | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value | $ 100,000 | $ 300,000 | |
Long Term Incentive Plan 2019 [Member] | |||
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 27,000,000 | 27,000,000 | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Number of Shares Per Employee (in shares) | 1,000,000 | ||
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee, Value | $ 175,000 | ||
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | 281,467 | ||
Long Term Incentive Equity Plan 2011 [Member] | |||
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 3,000,000 | ||
Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Number of Shares Per Employee (in shares) | 150,000 | ||
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | 61,302 | ||
The 2008 Equity Incentive Plan [Member] | |||
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 50,000 | ||
Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Number of Shares Per Employee (in shares) | 5,000 | ||
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | 20,473 |
Note 15 - Share-Based Compens_4
Note 15 - Share-Based Compensation - Schedule of Share-Based Compensation, Restricted Stock and Restricted Stock Units Activity (Details) - Restricted Stock Awards and Restricted Stock Units (RSUs) [Member] shares in Thousands | 12 Months Ended |
Dec. 31, 2022 $ / shares shares | |
Non-vested, shares (in shares) | 0 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 166 |
Granted, grant date fair value (in dollars per share) | $ / shares | $ 0.18 |
Vested, shares (in shares) | (166) |
Vested, grant date fair value (in dollars per share) | $ / shares | $ 0.18 |
Forfeited, shares (in shares) | 0 |
Forfeited, grant date fair value (in dollars per share) | $ / shares | $ 0 |
Non-vested, shares (in shares) | 0 |
Non-vested, grant date fair value (in dollars per share) | $ / shares | $ 0 |
Note 15 - Share-Based Compens_5
Note 15 - Share-Based Compensation - Share-Based Compensation, Stock Options Activity (Details) - Share-Based Payment Arrangement, Option [Member] $ / shares in Units, shares in Thousands | 12 Months Ended |
Dec. 31, 2022 USD ($) $ / shares shares | |
Outstanding, shares (in shares) | shares | 23,215 |
Outstanding, weighted average exercise price (in dollars per share) | $ / shares | $ 0.42 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares | 1,450 |
Granted, weighted average exercise price (in dollars per share) | $ / shares | $ 0.19 |
Exercised, shares (in shares) | shares | (485) |
Exercised, weighted average exercise price (in dollars per share) | $ / shares | $ 0.17 |
Forfeited/Expired, shares (in shares) | shares | 0 |
Forfeited/Expired, weighted average exercise price (in dollars per share) | $ / shares | $ 0 |
Outstanding, shares (in shares) | shares | 24,180 |
Outstanding, weighted average exercise price (in dollars per share) | $ / shares | $ 0.41 |
Outstanding, weighted average remaining contractual term (Year) | 3 years 7 months 6 days |
Outstanding, aggregate intrinsic value | $ | $ 542 |
Vested, shares (in shares) | shares | 22,943 |
Vested, weighted average exercise price (in dollars per share) | $ / shares | $ 0.42 |
Vested, weighted average remaining contractual term (Year) | 3 years 3 months 18 days |
Vested, aggregate intrinsic value | $ | $ 489 |
Note 15 - Share-Based Compens_6
Note 15 - Share-Based Compensation - Schedule of Share-Based Payment Award Stock Options, Valuation Assumptions (Details) - Share-Based Payment Arrangement, Option [Member] | 12 Months Ended | ||
Dec. 31, 2022 | Dec. 31, 2021 | ||
Expected option term (in years) 1 (Year) | [1] | 5 years | 4 years |
Expected volatility factor 2 | [2] | 141.10% | |
Risk-free interest rate 3 | [3] | 0.36% | |
Expected annual dividend yield | 0% | 0% | |
Minimum [Member] | |||
Expected volatility factor 2 | [2] | 143.90% | |
Risk-free interest rate 3 | [3] | 3.05% | |
Maximum [Member] | |||
Expected volatility factor 2 | [2] | 155.90% | |
Risk-free interest rate 3 | [3] | 4.09% | |
[1]The expected term was generally determined based on historical activity for grants with similar terms and for similar groups of employees and represents the period of time that options are expected to be outstanding. For employee options, groups of employees with similar historical exercise behavior are considered separately for valuation purposes.[2]The stock volatility for each grant is measured using the weighted average of historical daily price changes of our common stock over the most recent period equal to the expected option life of the grant.[3]The risk-free interest rate for periods equal to the expected term of the share option is based on the U.S. Treasury yield curve in effect at the measurement date. |
Note 15 - Share-based Compens_7
Note 15 - Share-based Compensation - Schedule of Share Based Compensation, Shares Authorized Under Stock Option Plans By Exercise Price Range (Details) | 12 Months Ended |
Dec. 31, 2022 $ / shares shares | |
Options outstanding, number (in shares) | shares | 24,180 |
Options outstanding, weighted average exercise price (in dollars per share) | $ 0.41 |
Options outstanding, weighted average contractual life (Year) | 3 years 7 months 6 days |
Options vested, number (in shares) | shares | 22,943 |
Options vested, weighted average exercise price (in dollars per share) | $ 0.42 |
Options vested, weighted average contractual life (Year) | 3 years 3 months 18 days |
Exercise Price Range One [Member] | |
Exercise price, lower limit (in dollars per share) | $ 0.171 |
Exercise price, upper limit (in dollars per share) | $ 0.33 |
Options outstanding, number (in shares) | shares | 10,254 |
Options outstanding, weighted average exercise price (in dollars per share) | $ 0.18 |
Options outstanding, weighted average contractual life (Year) | 4 years 6 months |
Options vested, number (in shares) | shares | 9,017 |
Options vested, weighted average exercise price (in dollars per share) | $ 0.18 |
Options vested, weighted average contractual life (Year) | 3 years 8 months 12 days |
Exercise Price Range Two [Member] | |
Exercise price, lower limit (in dollars per share) | $ 0.50 |
Exercise price, upper limit (in dollars per share) | $ 0.75 |
Options outstanding, number (in shares) | shares | 13,553 |
Options outstanding, weighted average exercise price (in dollars per share) | $ 0.54 |
Options outstanding, weighted average contractual life (Year) | 3 years |
Options vested, number (in shares) | shares | 13,553 |
Options vested, weighted average exercise price (in dollars per share) | $ 0.54 |
Options vested, weighted average contractual life (Year) | 3 years |
Exercise Price Range Three [Member] | |
Exercise price, lower limit (in dollars per share) | $ 1.98 |
Exercise price, upper limit (in dollars per share) | $ 2.97 |
Options outstanding, number (in shares) | shares | 373 |
Options outstanding, weighted average exercise price (in dollars per share) | $ 2.02 |
Options outstanding, weighted average contractual life (Year) | 1 year 6 months |
Options vested, number (in shares) | shares | 373 |
Options vested, weighted average exercise price (in dollars per share) | $ 2.02 |
Options vested, weighted average contractual life (Year) | 1 year 6 months |
Note 16 - Related Party Trans_2
Note 16 - Related Party Transactions (Details Textual) $ / shares in Units, Pure in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended | |||
Jan. 31, 2023 $ / shares shares | Aug. 30, 2022 USD ($) $ / shares | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | May 31, 2022 USD ($) $ / shares | |
Convertible Debt, Total | $ 4,538 | $ 2,895 | |||
Subsequent Event [Member] | |||||
Shares Issued, Price Per Share (in dollars per share) | $ / shares | $ 0.16 | ||||
Sterne Kessler Goldstein Fox Pllc [Member] | Patent-Related Legal Services [Member] | |||||
Related Party Transaction, Expenses from Transactions with Related Party | 10 | 100 | |||
Sterne Kessler Goldstein Fox Pllc [Member] | Promissory Note [Member] | Unsecured Debt [Member] | |||||
Related Party Transaction, Expenses from Transactions with Related Party | 100 | $ 100 | |||
Notes Payable, Related Parties | 600 | ||||
Paul Rosenbaum [Member] | Promissory Notes [Member] | |||||
Debt Instrument, Face Amount | $ 100 | ||||
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares | $ 0.13 | ||||
Convertible Debt, Total | $ 200 | ||||
Debt Instrument, Convertible, Number of Equity Instruments | 1,020 | ||||
Sanford Litvack [Member] | Subsequent Event [Member] | |||||
Stock Issued During Period, Shares, New Issues (in shares) | shares | 62,500 | ||||
Shares Issued, Price Per Share (in dollars per share) | $ / shares | $ 0.16 | ||||
Sanford Litvack [Member] | Promissory Notes [Member] | |||||
Debt Instrument, Face Amount | $ 30 | ||||
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares | $ 0.13 | ||||
Debt Instrument, Convertible, Number of Equity Instruments | 200 |
Note 18 - Subsequent Events (De
Note 18 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions | 1 Months Ended | 12 Months Ended | ||||
Mar. 28, 2023 | Jan. 31, 2023 | Dec. 31, 2022 | Jan. 16, 2023 | Dec. 31, 2021 | Jan. 31, 2021 | |
Long Term Incentive Plan 2019 [Member] | ||||||
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 27 | 27 | ||||
Convertible Debt [Member] | ||||||
Debt Instrument, Term (Year) | 5 years | |||||
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 0.10 | $ 0.29 | ||||
Debt Instrument, Interest Rate, Stated Percentage | 12% | |||||
Subsequent Event [Member] | ||||||
Proceeds from Patent License and Settlement Agreement | $ 25,000 | |||||
Proceeds from Issuance of Common Stock | $ 140 | |||||
Shares Issued, Price Per Share (in dollars per share) | $ 0.16 | |||||
Liquidated Damages Percentage | 1% | |||||
Liquidated Damages Amount | $ 50 | |||||
Subsequent Event [Member] | Long Term Incentive Plan 2019 [Member] | ||||||
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 30 | |||||
Subsequent Event [Member] | Maximum [Member] | ||||||
Liquidated Damages Percentage | 6% | |||||
Subsequent Event [Member] | Convertible Debt [Member] | ||||||
Proceeds from Convertible Debt | $ 700 | |||||
Debt Instrument, Term (Year) | 5 years | |||||
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 0.16 | |||||
Debt Instrument, Renewal Term (Year) | 10 years | |||||
Debt Instrument, Interest Rate, Stated Percentage | 9% | |||||
Subsequent Event [Member] | Convertible Debt [Member] | Portion of Convertible Debt With Renewable Maturity Date [Member] | ||||||
Debt Instrument, Face Amount | $ 500 |