UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

(X) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended ~~June 30, 2017~~March 31, 2018

( ) TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 1-31398

NATURAL GAS SERVICES GROUP, INC.

(Exact name of registrant as specified in its charter)



Colorado		75-2811855
(State or other jurisdiction of		(I.R.S. Employer
incorporation or organization)		Identification No.)

508 W. Wall St., Ste 550

Midland, Texas 79701

(Address of principal executive offices)

(Registrant’s telephone number, including area code)



Class		~~July 31, 2017~~May 4, 2018
Common Stock, $0.01 par value		~~12,937,363~~13,085,607

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

See accompanying notes to these unaudited condensed consolidated financial statements.

Natural Gas Services Group, Inc.

Notes to Condensed Consolidated Financial Statements

(1) Basis of Presentation and Summary of Significant Accounting Policies

These notes apply to the unaudited condensed consolidated financial statements of Natural Gas Services Group, Inc. a Colorado corporation (the "Company", “NGSG”, "Natural Gas Services Group", "we" or "our").

The accompanying unaudited condensed consolidated financial statements include all adjustments, consisting of only normal recurring adjustments, which are necessary to make our financial position at ~~June 30, 2017~~March 31, 2018 and the results of our operations for the three ~~and six~~ months ended ~~June 30,~~March 31, ~~2017~~2018 and ~~2016~~2017 not misleading. As permitted by the rules and regulations of the Securities and Exchange Commission (SEC), the accompanying condensed consolidated financial statements do not include all disclosures normally required by generally accepted accounting principles in the United States of America (GAAP). These financial statements should be read in conjunction with the financial statements included in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~2017 on file with the SEC. In our opinion, the condensed consolidated financial statements are a fair presentation of the financial position, results of operations and cash flows for the periods presented.

The results of operations for the three ~~and six~~ months ended ~~June 30, 2017~~March 31, 2018 are not necessarily indicative of the results of operations to be expected for the full fiscal year ending December 31, ~~2017~~2018.

Revenue Recognition Policy

The Company adopted ASC 606, Revenue from Contracts with Customers ("ASC 606") on January 1, 2018. As a result, the Company has changed its accounting policy for revenue recognition as detailed below.

The Company applied ASC 606 using the cumulative effect method. We had no significant changes in our recognition of revenue at adoption and our review of all open revenue from contracts with customers on January 1, 2018 indicated we had no adjustment to be made. If an adjustment had been needed, we would have recognized the cumulative effect of initially applying ASC 606 with an adjustment to the opening balance of equity at January 1, 2018. Therefore, our consolidated financial statements for 2017 reported under ASC 605 are comparable to the consolidated financial statements for 2018 reported under ASC 606, since an adjustment was not needed, except for the respective additional disclosures as detailed below.

Revenue is measured based on a consideration specified in a customer’s contract, excluding any sale incentives and taxes collected on behalf of third parties (i.e. sales and property taxes). We recognize revenue once a performance obligation has been satisfied and control over a product or service has transferred to the customer. Shipping and handling costs incurred are accounted for as fulfillment costs and are included in cost of revenues in our condensed consolidated income statement.

Nature of goods and Services

The following is a description of principal activities from which the Company generates its revenue:

Rental Revenue. The Company generates revenue from renting compressors and flare systems to our customers. These contracts may also include a fee for servicing the compressor or flare during the rental contract. Our rental contracts range from six to twenty-four months, with revenue being recognized over time, in equal payments over the term of the contract. After the terms of the contract have expired, a customer may renew their contract or continue renting on a monthly basis thereafter. In accordance with generally accepted accounting principles, the revenue earned from servicing rental equipment is recognized in accordance with ASC 606, while the revenue earned from the ~~sales~~rental of ~~custom~~the equipment is recognized in accordance withASC 840 - Leases.

Sales Revenue. The Company generates revenue by the sale of custom/fabricated compressors, flare systems and parts, as well as, exchange/rebuilding customer owned compressors and sale of used rental equipment.

Custom/fabricated compressors and flare systems - The Company designs and fabricates compressors and flares based on the customer’s specifications outlined in their contract. Though the equipment being built is ~~recognized when title passes~~customized by the customer, control under these contracts does not pass to the customer until the compressor or flare package is complete and shipped, or in accordance with a bill and hold arrangements the customer accepts title and assumes ~~risks~~the risk and rewards of ~~ownership, collectability~~ownership. We request some of our customer’s to make progressive payments as the product is ~~reasonably assured~~being built; these payments are recorded as a contract liability on the Deferred Income line on the condensed consolidated balance sheet until control has been transferred. These contracts also may

include an assurance warranty clause to guarantee the product is free from defects in material and ~~delivery occurs as directed by our customer.~~ workmanship for a set duration of time; this is a standard industry practice and is not considered a performance obligation.

From time to time, ~~we have customers that~~upon the customer’s written request, ~~units and flares to be built under a bill and hold arrangement. In order to~~we recognize revenue ~~under~~when manufacturing is complete and the equipment is ready for shipment. At the customer’s request, we will bill the customer upon completing all performance obligations, but before shipment. The customer will formally request we ship the equipment per their direction from our manufacturing facility at a ~~bill~~later specified date and ~~hold arrangement~~that we segregate the ~~following criteria must be met:~~equipment from our finished goods, such that they are not available to fill other orders. Per the customer’s agreement, title of the equipment, all risk of ownership ~~was~~including, the risk of loss, is passed to the customer ~~customer made a fixed commitment to purchase~~once the ~~goods, the customer requested the~~equipment is complete and ready for shipment. We have operated using bill and hold agreements with certain customers for many years, with consistent satisfactory results for both the customer and us. The credit terms on these agreements are consistent with the credit terms on all other sales. All risks of loss are shouldered by the customer, and there ~~was a fixed schedule~~are no exceptions to the customer’s commitment to accept and pay for ~~delivery, we no longer had any specific performance obligations,~~ the ~~purchase was segregated~~manufactured equipment. Revenues recognized at ~~our facility and~~ the ~~equipment was complete and ready to ship. For~~completion of manufacturing for the ~~six~~three months ended ~~June 30, 2017, we~~March 31, 2018 was approximately $1.7 million.

Parts - Revenue is recognized after the customer obtains control of the parts. Control is passed either by the customer taking physical possession or the parts being shipped. The amount of revenue ~~of $3.0 million under these bill and hold arrangements.~~ recognized is not adjusted for expected returns, as our historical part returns have been de minimis.

Exchange ~~and~~ or rebuilding customer owned compressors - Based on the contract, the Company will either exchange a new/rebuilt compressor ~~revenue~~for the customer’s malfunctioning compressor or rebuild the customer’s compressor. Revenue is recognized ~~when~~after control of the replacement compressor has ~~been delivered and the rebuild assessment has been completed. Revenue from compressor service and retrofitting services is recognized upon providing services~~transferred to the ~~customer. Maintenance agreement revenue is recognized as services are rendered. Rental revenue is recognized over the terms~~customer by physical delivery, delivery and installment or shipment of the ~~respective~~compressor.

Used compressors or flares - From time to time, a customer may request to purchase a used compressor or flare out of our rental ~~agreements. Deferred income represents payments received before a product is shipped.~~fleet. Revenue from the sale of rental ~~units~~equipment is recognized when the control has passed to the customer, when the customer has taken physical possession or the equipment has been shipped.

Service and Maintenance Revenue. The Company provides routine or call-out services on customer owned equipment. Revenue is recognized after services in the contract are rendered.

Payment terms for sales revenue and service and maintenance revenue discussed above are generally 30 to 60 days although terms for specific customers can vary. Also, the transaction prices are not subject to variable consideration constraints.

Disaggregation of Revenue

The following table shows the Company's revenue disaggregated by product or service type for the three moths ended March 31, 2018 and 2017:



	Three months ended March 31,
	(in thousands)
	2018		2017
Compressors - sales	$	1,829	$	5,640
Flares - sales	522		269
Other (Parts/Rebuilds) - sales	647		727
Service and maintenance ¹	4,837		5,116
Total revenue from contracts with customers	7,835		11,752
Add: non-ASC 606 rental revenue	6,883		7,150
Total revenue	$	14,718	$	18,902

¹Service and maintenance includes revenue from servicing our own rental equipment contracted to customers and third party equipment.

As of March 31, 2018 and December 31, 2017, we had the following receivables and deferred income from contracts with customers:



	March 31, 2018			December 31, 2017
	(in thousands)
Accounts Receivable
Accounts receivable - contracts with customers	$	5,080		$	5,454
Accounts receivable - non-ASC 606	3,134			3,649
Total Accounts Receivable	$	8,214		$	9,103
Less:Allowance for doubtful accounts	$	(495	)	$	(569	)
Total Accounts Receivable, net	$	7,719		$	8,534

Deferred income	$	294		$	185

The Company did not recognize any revenue for the period ended March 31, 2018 that were included in deferred income at the beginning of the period. For the period ended December 31, 2017, the Company recognized revenue of $1.9 million from amounts related to sales that were included in deferred income at the beginning of the period.

The increases (decreases) of Accounts Receivable and deferred income were primarily due to normal timing differences between our performance and the customers’ payments.

Transaction Price Allocated to the Remaining Performance Obligations

The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period:



(in thousands)	2019⁽¹⁾		2020		2021		2022		2023		Total
Service and Maintenance	$	610	$	595	$	542	$	542	$	9	$	2,298

(1) For the nine months starting April 2019.

All consideration from contracts with customers is included in ~~sales revenue when equipment is shipped~~the amounts presented above.

The Company applies the practical expedient in ASC 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or ~~title is transferred~~less.

The Company applies the transition practical expedient in ASC 606-10-65-1(f)(3) and does not disclose the amount of the transaction price allocated to the ~~customer.~~remaining performance obligations and an explanation of when the Company expects to recognize that amount as revenue for 2017.

The Company applies the practical expedient in ASC 340-40-25-4 and recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that the Company otherwise would have recognized is one year or less. These costs are included in selling, general and administrative expense on our consolidated income statement.

Fair Value of Financial Instruments

Our financial instruments consist principally of cash and cash equivalents, accounts receivable, accounts payable, deferred compensation plan (cash portion) and our line of credit. Pursuant to ASC 820 (Accounting Standards Codification), the fair value

of our cash equivalents is determined based on “Level 1” inputs, which consist of quoted prices in active markets for identical assets. We believe that the recorded values of all of our other financial instruments approximate their fair values because of their nature and relatively short maturity dates or durations.

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases, and operating losses and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.

ASC Topic 740 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. In order to record any financial statement benefit, we are required to determine, based on technical merits of the position, whether it is more likely than not (a likelihood of more than 50 percent) that a tax position will be sustained upon examination, including resolution of any related appeals or litigation processes. If that step is satisfied, then we must measure the tax position to determine the amount of benefit to recognize in the financial statements. The tax position is measured at the largest amount of the benefit that is greater than 50 percent likely of being realized upon ultimate settlement. We have no uncertain tax positions as of March 31, 2018.

Our policy regarding income tax interest and penalties is to expense those items as other expense.

On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the “2017 Tax Act”), which makes broad and complex changes to the U.S. tax code. Certain income tax effects of the 2017 Tax Act are reflected in the Company’s financial results in accordance with Staff Accounting Bulletin No. 118 (“SAB 118”), which provides SEC staff guidance regarding the application of Accounting Standards Codification Topic 740 Income Taxes (“ASC 740”). As we do not have all of the necessary information to analyze all income tax effects of the 2017 Tax Act, we will continue to evaluate tax reform and adjust the provisional amounts as additional information is obtained. We expect to complete our detailed analysis no later than the fourth quarter of 2018.

Recently Issued Accounting Pronouncements

On February 25, 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-02, Leases (Topic 842). Under the new guidance, a lessee will be required to recognize assets and liabilities for capital and operating leases with lease terms of more than 12 months. Additionally, this ASU will require disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases, including qualitative and quantitative requirements. For public business entities, the amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. The new standard will be effective during our first quarter ending March 31, 2019. ~~We are currently determining~~The process of reviewing our leases and evaluating the ~~impacts~~impact of the new standard on our condensed consolidated financial statements and ~~the additional applicable disclosure requirements.~~

Reclassification of Prior Period Balances

Certain reclassifications have been made to prior period amounts to conform to the current-year presentation. These

reclassifications had no effect on the reported results of operations.

guidance also requires more detailed disclosures to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015, the FASB issued an accounting standards update for a one-year deferral of the revenue recognition standard’s effective date for all entities, which changed the effectiveness to interim and annual reporting periods beginning after December 15, 2017. As a result, we expect to adopt this guidance on January 1, 2018. The guidance offers two transition methods: a full retrospective approach to be applied to each prior reporting period presented or a modified retrospective approach where the cumulative effect of initially applying the standard is recognized at the date of initial application. We have not yet selected the transition method. We are currently determining the impacts of the new standard on our consolidated financial statements. Our approach includes performing a detailed review of key contracts that are representative of our various revenue streams and comparing our historical accounting policies and practices to the new standard. Our sales and service and maintenance contracts are more short-term in nature or can usually be completed within the same quarter they are started; but, at this stage in our assessment we are still evaluating the extent to which we will have changes, upon adoption. For the impact related to our rental revenues, we are still in the early stages of our review and have not concluded as to what impact, if any, there may be to our rental revenues. We expect to complete our review by mid-November 2017.

(2) Stock-Based Compensation

A summary of option activity under our 1998 Stock Option Plan as of December 31, ~~2016,~~2017, and changes during the ~~six~~three months ended ~~June 30, 2017~~March 31, 2018 is presented below.

Number
of
Stock Options

Weighted Average
Exercise
Price

Weighted
Average
Remaining
Contractual Life (years)

Aggregate
Intrinsic
Value
(in thousands)
Outstanding, December 31, 2016 350,186
$ 19.45
4.25 $ 4,453
Granted 32,750
28.15

Exercised (25,580 ) 20.19

271
Outstanding, June 30, 2017 357,356
$ 20.19
4.43 $ 2,071
Exercisable, June 30, 2017 305,441
$ 19.11
3.67 $ 2,038



	Number of Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in thousands)
Outstanding, December 31, 2017	327,270		$	20.21	4.28	$	2,255
Exercised	(8,500	)	18.51			86
Outstanding, March 31, 2018	318,770		$	20.25	4.07	$	1,638
Exercisable, March 31, 2018	296,738		$	19.67	3.72	$	1,638

The following table summarizes information about our stock options outstanding at ~~June 30, 2017~~March 31, 2018:

Range of Exercise Prices
Options Outstanding Options Exercisable
Shares
Weighted
Average
Remaining
Contractual
Life (years)

Weighted
Average
Exercise
Price
Shares
Weighted
Average
Exercise
Price
$0.01-15.70 65,852
2.06 $ 9.82
65,852
$ 9.82
$15.71-17.81 72,750
2.29 17.53
72,750
17.53
$17.82-20.48 86,836
2.84 19.60
86,836
19.60
$20.49-33.36 131,918
7.84 27.23
80,003
27.67
357,356
4.43 $ 20.19
305,441
$ 19.11



Range of Exercise Prices	Options Outstanding				Options Exercisable
Range of Exercise Prices	Shares	Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price		Shares	Weighted Average Exercise Price
$0.01-15.70	65,852	1.31	$	9.82	65,852	$	9.82
$15.71-17.81	67,750	1.62	17.53		67,750	17.53
$17.82-20.48	54,250	3.22	19.39		54,250	19.39
$20.49-33.36	130,918	7.09	27.27		108,886	27.09
	318,770	4.07	$	20.25	296,738	$	19.67

The summary of the status of our unvested stock options as of December 31, ~~2016~~2017 and changes during the ~~six~~three months ended ~~June 30, 2017~~March 31, 2018 is presented below.

Unvested stock options:
Shares
Weighted Average
Grant Date Fair Value Per Share
Unvested at December 31, 2016 50,833
$ 12.67
Granted 32,750
11.93
Vested (31,668 ) 13.56
Unvested at June 30, 2017 51,915
$ 11.66



Unvested stock options:	Shares		Weighted Average Grant Date Fair Value Per Share
Unvested at December 31, 2017	48,581		$	11.41
Vested	(26,549	)	10.97
Unvested at March 31, 2018	22,032		$	11.93

As of ~~June 30, 2017~~March 31, 2018, there was $~~418,151~~223,511 of unrecognized compensation cost related to unvested options. Such cost is expected to be recognized over a weighted-average period of two years. Total compensation expense for stock options was $~~207,560~~66,625 and $124,331 for the three months endedMarch 31, 2018 and ~~$277,549~~ ~~for the~~ ~~six months endedJune 30,~~ 2017 ~~and~~ ~~2016~~, respectively.

Restricted Shares/Units:

In accordance with the Company's employment agreement with Stephen Taylor, the Company's Chief Executive Officer, the Compensation Committee reviewed his performance in determining the issuance of restricted common stock. Based on this review which included consideration of the Company's ~~2016~~2017 performance, Mr. Taylor, was awarded ~~70,464~~84,700 restricted shares/units on ~~February 14, 2017,~~March 15, 2018, which vest over three years, in equal installments, beginning ~~February 14, 2018.~~March 15, 2019. On March ~~23, 2017,~~15, 2018, the Compensation Committee awarded 20,000 restricted shares/units to each of G. Larry Lawrence, our CFO, and James Hazlett, our Vice President of Technical Services. The restricted shares to Messrs. Lawrence and Hazlett vest over three years, in equal installments, beginning March ~~23, 2018.~~15, 2019. We also awarded and issued ~~15,968~~16,288 shares of restricted common stock to the independent members of our Board of Directors as partial payment for ~~2017 directors' fees.~~2018 services as directors. The restricted stock issued to our directors vests over one year, in quarterly installments, beginning March 31, ~~2018.~~2019. Total compensation expense related to restricted awards was ~~$2,209,455~~$361,630 and ~~$908,879~~$1,408,265 for the ~~six~~three months ended ~~June 30,~~March 31, 2018 and 2017, ~~and 2016,~~ respectively. As of ~~June 30, 2017,~~March 31, 2018, there was a total of ~~$2,848,876~~$4,408,825 of unrecognized compensation expense related to these shares/units which is expected to be recognized over the next ~~two~~three years.

Our inventory, net of allowance for obsolescence of ~~$16,458~~$20,785 and $15,000 at ~~June 30, 2017~~March 31, 2018 and December 31, ~~2016~~2017, respectively, consisted of the following amounts:

Our long-term inventory consists of raw materials that remain viable but that the Company does not expect to sell within the year.

During the ~~six~~three months ended ~~June 30,~~March 31, 2018 and 2017, ~~and 2016,~~ there were no write-offs of obsolete inventory against the allowance for obsolescence.

~~(4) Retirement of Long-Lived Assets~~

During the review of our rental compressor units, management looks for any units that are not of the type, configuration, make or model that our customers are demanding or that were not cost efficient to refurbish, maintain and/or operate. From our review in 2016, we determined 63 units should be retired from our rental fleet with key components from those units being re-utilized in future unit builds and/or repairs. We performed an optimization review and recorded a $545,000 loss on retirement of

rental equipment to reduce the book value of each unit to the estimated fair value of approximately $242,000 for key components being kept. This retirement was recorded in the 2016 consolidated income statement under loss on retirement of rental equipment. No retirements have been made in 2017.

~~(5)~~(4) Deferred Compensation Plans

~~Effective January 1, 2016, the~~The Company ~~established~~has a non-qualified deferred compensation plan for executive officers, directors and certain eligible employees. The assets of the deferred compensation plan are held in a rabbi trust and are subject to additional risk of loss in the event of bankruptcy or insolvency of the Company. The plan allows for deferral of up to 90% of a participant’s base salary, bonus, commissions, director fees and restricted stock unit awards. A Company owned life insurance policy held in a rabbi trust is utilized as a source of funding for the plan. The cash surrender value of the life insurance policy is ~~$754,000~~$966,000 and ~~$109,000~~$312,000 as of ~~June 30,~~March 31, 2018 and 2017, ~~and 2016, respectively, with~~respectively. For the three months ending March 31, 2018, we reported in other (expense) income in the consolidated income statement a ~~gain~~loss related to the policy of approximately ~~$17,000~~$67,000 and ~~$4,000 reported in other income in the condensed consolidated income statement~~ for the ~~six months ending June 30,~~same period in 2017, ~~and 2016, respectively.~~a gain of approximately $12,000.

For deferrals of base salary, bonus, commissions and director fees, settlement payments are made to participants in cash, either in a lump sum or in periodic installments. The obligation to pay the deferred compensation and the deferred director fees is adjusted to reflect the positive or negative performance of investment measurement options selected by each participant and was ~~$713,000~~$992,000 and ~~$109,000~~$261,000 as of ~~June 30,~~March 31, 2018 and 2017, ~~and 2016,~~ respectively. The deferred obligation is included in other long-term liabilities in the condensed consolidated balance sheet.

For deferrals of restricted stock units, the plan does not allow for diversification, therefore, distributions are paid in shares of common stock and the obligation is carried at grant value. As of ~~June 30, 2017, 97,011~~March 31, 2018, 104,590 unvested restricted stock units have been ~~deferred.~~deferred and 32,037 units have been released; carrying a value of $816,373 to the deferred compensation plan.

~~(6)~~(5) Credit Facility

We have a senior secured revolving credit agreement the ("Amended Credit Agreement") with JP Morgan Chase Bank, N.A (the "Lender") with an aggregate commitment of $30 million, subject to collateral availability. We also have a right to request from the Lender, on an uncommitted basis, an increase of up to $20 million on the aggregate commitment (which could potentially increase the commitment amount to $50 million). On August 31, 2017, we amended and renewed the Amended Credit Agreement, which was set to expire on December 31, 2017. The Credit Agreement Amendment extended the maturity date to December 31, 2020. No other material revisions were made to the credit facility.

Borrowing Base. At any time before the maturity of the Amended Credit Agreement, we may draw, repay and re-borrow amounts available under the borrowing base up to the maximum aggregate availability discussed above. Generally, the borrowing base equals the sum of (a) 80% of our eligible accounts receivable plus (b) 50% of the book value of our eligible general inventory (not to exceed 50% of the commitment amount at the time) plus (c) 75% of the book value of our eligible equipment inventory. The Lender may adjust the borrowing base components if material deviations in the collateral are discovered in future audits of the collateral. We had $29.5 million borrowing base availability at ~~June 30, 2017~~March 31, 2018 under the terms of our Amended Credit Agreement.

Interest and Fees. Under the terms of the Amended Credit Agreement, we have the option of selecting the applicable variable rate for each revolving loan, or portion thereof, of either (a) LIBOR multiplied by the Statutory Reserve Rate (as defined in the Amended Credit Agreement), with respect to this rate, for Eurocurrency funding, plus the Applicable Margin (“LIBOR-based”), or (b) CB Floating Rate, which is the Lender's Prime Rate less the Applicable Margin; provided, however, that no more than three LIBOR-based borrowings under the agreement may be outstanding at any one time. For purposes of the LIBOR-based interest rate, the Applicable Margin is 1.50%. For purposes of the CB Floating Rate, the Applicable Margin is 1.50%. For the ~~half~~three month period ended ~~June 30, 2017,~~March 31, 2018, our weighted average interest rate was ~~2.49%~~3.16%.

Accrued interest is payable monthly on outstanding principal amounts, provided that accrued interest on LIBOR-based loans is payable at the end of each interest period, but in no event less frequently than quarterly. In addition, fees and expenses are payable in connection with our requests for letters of credit (generally equal to the Applicable Margin for LIBOR-related borrowings multiplied by the face amount of the requested letter of credit) and administrative and legal costs.

Maturity. The maturity date of the Amended Credit Agreement is December 31, ~~2017,~~2020, at which time all amounts borrowed under the agreement will be due and outstanding letters of credit must be cash collateralized. The agreement may be terminated early upon our request or the occurrence of an event of default. ~~Due to our debt maturing in less than twelve months, the debt was classified as current on the condensed consolidated balance sheet.~~

Security. The obligations under the Amended Credit Agreement are secured by a first priority lien on all of our inventory and accounts and leases receivables, along with a first priority lien on a variable number of our leased compressor equipment the book value of which must be maintained at a minimum of 2.00 to 1.00 commitment coverage ratio (such ratio being equal to (i) the amount of the borrowing base as of such date to (ii) the amount of the commitment as of such date.)

Covenants. The Amended Credit Agreement contains customary representations and warranties, as well as covenants which, among other things, limit our ability to incur additional indebtedness and liens; enter into transactions with affiliates; make acquisitions in excess of certain amounts; pay dividends; redeem or repurchase capital stock or senior notes; make investments or loans; make negative pledges; consolidate, merge or effect asset sales; or change the nature of our business. In addition, we also have certain financial covenants that require us to maintain on a consolidated basis a leverage ratio less than or equal to 2.50 to 1.00 as of the last day of each fiscal quarter.

Events of Default and Acceleration. The Amended Credit Agreement contains customary events of default for credit facilities of this size and type, and includes, without limitation, payment defaults; defaults in performance of covenants or other agreements contained in the loan documents; inaccuracies in representations and warranties; certain defaults, termination events or similar events; certain defaults with respect to any other Company indebtedness in excess of $50,000; certain bankruptcy or insolvency events; the rendering of certain judgments in excess of $150,000; certain ERISA events; certain change in control events and the defectiveness of any liens under the secured revolving credit facility. Obligations under the Amended Credit Agreement may be accelerated upon the occurrence of an event of default.

As of ~~June 30, 2017~~March 31, 2018, we were in compliance with all covenants in our Amended Credit Agreement. A default under our Credit Agreement could trigger the acceleration of our bank debt so that it is immediately due and payable. Such default would likely limit our ability to access other credit. At ~~June 30, 2017~~March 31, 2018 and December 31, ~~2016~~2017 our outstanding balance on the line of credit was $417,000.

(6) Earnings per Share

The following table reconciles the numerators and denominators of the basic and diluted earnings per share computation(in thousands, except per share data).:

In the three ~~and six~~ months ended ~~June 30,~~March 31, 2018 and 2017, options to purchase 83,917 shares of common stock with exercise prices ranging from $28.15 to $33.36 were not included in the computation of dilutive income per share, due to their antidilutive effect.

In the three and six months ended June 30, 2016, options to purchase 107,500 shares of common stock with exercise prices ranging from $22.90 to $33.36 were not included in the computation of dilutive income per share, due to their antidilutive effect.

~~(8)~~(7) Segment Information

ASC 280-10-50, “Operating Segments", defines the characteristics of an operating segment as: a) being engaged in business activity from which it may earn revenue and incur expenses, b) being reviewed by the Company's chief operating decision maker (CODM) for decisions about resources to be allocated and assess its performance and c) having discrete financial information. Although we look at our products to analyze the nature of our revenue, other financial information, such as certain costs and expenses, net income and EBITDA are not captured or analyzed by these categories. Our CODM does not make resource allocation decisions or access the performance of the business based on these categories, but rather in the aggregate. Based on this, management believes that it operates in one business segment.

In their analysis of product lines as potential operating segments, management also considered ASC 280-10-50-11, “Aggregation Criteria”, which allows for the aggregation of operating segments if the segments have similar economic characteristics and if the segments are similar in each of the following areas:

We are engaged in the business of designing and manufacturing compressors and flares. Our compressors and flares are sold and rented to our customers. In addition, we provide service and maintenance on compressors in our fleet and to third parties. These business activities are similar in all geographic areas. Our manufacturing process is essentially the same for the entire Company and is performed in-house at our facilities in Midland, Texas and Tulsa, Oklahoma. Our customers primarily consist of entities in the business of producing natural gas and crude oil. The maintenance and service of our products is consistent across the entire Company and is performed via an internal fleet of vehicles. The regulatory environment is similar in every

jurisdiction in that the most impacting regulations and practices are the result of federal energy policy. In addition, the economic characteristics of each customer arrangement are similar in that we maintain policies at the corporate level.

For the three months ended June 30, 2016 (in thousands):
Rental Sales Service & Maintenance Corporate Total
Revenue $ 14,655
$ 2,300
$ 239
$ —
$ 17,194
Operating costs and corporate expenses 5,411
2,236
85
7,589
15,321
Total other expense, net —
—

(9 ) (9 )
Income before provision for income taxes $ 9,244
$ 64
$ 154
$ (7,598 ) $ 1,864

For the six months ended June 30, 2017 (in thousands):
Rental Sales Service & Maintenance Corporate Total
Revenue $ 23,342
$ 11,044
$ 734
$ —
$ 35,120
Operating costs and expenses 8,923
9,168
198
16,074
34,363
Total other income, net —
—
—
2
2
Income before provision for income taxes $ 14,419
$ 1,876
$ 536
$ (16,072 ) $ 759

(8) Commitments and Contingencies

From time to time, we are a party to various legal proceedings in the ordinary course of our business. While management is unable to predict the ultimate outcome of these actions, it believes that any ultimate liability arising from these actions will not have a material adverse effect on our financial position, results of operations or cash flow. We are not currently a party to any material legal proceedings, and we are not aware of any threatened material litigation.

The Company also has a contractual obligation related to the construction of a new corporate office of approximately $10.5 million, financed by cash on hand. Construction of a new office began in late 2017 and is expected to be completed in early 2019.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The discussion and analysis of our financial condition and results of operations are based on, and should be read in conjunction with, our condensed, consolidated financial statements and the related notes included elsewhere in this report and in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~2017 filed with the SEC.

We fabricate, manufacture, rent, and sell natural gas compressors and related equipment. Our primary focus is on the rental of natural gas compressors. Our rental contracts generally provide for initial terms of six to 24 months. After the initial term of our rental contracts, many of our customers have continued to rent our compressors on a month-to-month basis. Rental amounts are billed monthly in advance and include maintenance of the rented compressors. As of ~~June 30, 2017~~March 31, 2018, we had ~~1,248~~1,213 natural gas compressors totaling ~~179,366~~183,927 horsepower rented to 7684 customers compared to ~~1,463~~1,261 natural gas compressors totaling ~~209,596~~180,594 horsepower rented to 8275 customers at ~~June 30, 2016~~March 31, 2017.

We also fabricate natural gas compressors for sale to our customers, designing compressors to meet unique specifications dictated by well pressures, production characteristics, and particular applications for which compression is sought. Fabrication of compressors involves our purchase of engines, compressors, coolers, and other components, and our assembling of these components on skids for delivery to customer locations. The major components of our compressors are acquired through periodic purchase orders placed with third-party suppliers on an “as needed” basis, which presently requires a two to three month lead time with delivery dates scheduled to coincide with our estimated production schedules. Although we do not have formal continuing supply contracts with any major supplier, we believe we have adequate alternative sources available. In the past, we have not

experienced any sudden and dramatic increases in the prices of the major components for our compressors. However, the occurrence of such an event could have a material adverse effect on the results of our operations and financial condition, particularly if we were unable to increase our rental rates and sales prices proportionate to any such component price increases.

We also manufacture a proprietary line of compressor frames, cylinders and parts, known as our CiP (Cylinder-in-Plane) product line. We use finished CiP component products in the fabrication of compressor units for sale or rental by us or sell the finished component products to other compressor fabricators. We also design, fabricate, sell, install, and service flare stacks and related ignition and control devices for onshore and offshore incineration of gas compounds such as hydrogen sulfide, carbon dioxide, natural gas and liquefied petroleum gases. To provide customer support for our compressor and flare sales businesses, we stock varying levels of replacement parts at our Midland, Texas facility and at field service locations. We also provide an exchange and rebuild program for screw compressors and maintain an inventory of new and used compressors to facilitate this business.

We provide service and maintenance to our customers under written maintenance contracts or on an as-required basis in the absence of a service contract. Maintenance agreements typically have terms of nine months to one year and require payment of a monthly fee.

The oil and natural gas equipment rental and services industry is cyclical in nature. The most critical factor in assessing the outlook for the industry is the worldwide supply and demand for natural gas and crude oil and the corresponding changes in commodity prices. As demand and prices increase, oil and natural gas producers increase their capital expenditures for drilling, development and production activities. Generally, the increased capital expenditures ultimately result in greater revenues and profits for services and equipment companies.

In general, we expect our overall business activity and revenues to track the level of activity in the natural gas industry, with changes in domestic natural gas production and consumption levels and prices more significantly affecting our business than changes in crude oil and condensate production and consumption levels and prices. However, in recent years we have increased our rental and sales in the non-conventional shale plays which are more dependent on crude oil prices. We also believe that demand for compression services and products is driven by declining reservoir pressure in maturing natural gas producing fields and, more recently, by increased focus by producers on non-conventional natural gas production, such as coalbed methane, gas shales and tight gas, which typically requires more compression than production from conventional natural gas reservoirs.

We typically experience a decline in demand during periods of low crude oil and natural gas prices. Low crude oil and natural gas prices experienced throughout 2016 ~~have~~ continued ininto mid-2017. In the ~~first~~latter half of 2017, ~~with some price movement but no significant sustaining price increases. Through much~~we began to see a increase in oil prices and activity that has continued into 2018. We anticipate a continuation of these increased prices and activity in E&P companies for the remainder of 2018. While the continuation of this period, producers maintained their focus on non-conventional oil and gas opportunities. The continued inconsistent price environment has caused reduced project spending on both conventional and non-conventional plays. While the timing of a return to aggressive investment in the projectsincreased activity is uncertain, we believe the ~~long-term~~

long-tem trend in ~~our~~out market is favorable. ~~We believe this outlook is supported by our ability to withstand cyclical disruptions and position the Company for the long term.~~

Results of Operations

Three months ended ~~June 30, 2017~~March 31, 2018, compared to the three months ended ~~June 30, 2016~~March 31, 2017.

The table below shows our revenues and percentage of total revenues of each of our product lines for the three months ended ~~June 30, 2017~~March 31, 2018 and ~~2016~~2017.

Total revenue decreased to ~~$16.2~~$14.7 million from ~~$17.2~~$18.9 million, or 6%22%, for the three months ended ~~June 30, 2017,~~March 31, 2018, compared to the same period ended ~~June 30, 2016.~~March 31, 2017. The decrease is mainly a result of the ~~$3.2 million drop~~fluctuation in ~~rental revenue~~sales due to the ~~number~~timing of ~~units being rented, partially offset by increased sales.~~industry activity.

Rental revenue decreased to ~~$11.4~~$11.5 million from ~~$14.7~~$11.9 million for the three months ended ~~June 30, 2017,~~March 31, 2018, compared to the same period ended ~~June 30, 2016.~~March 31, 2017. We ended the quarter with ~~2,531~~2,552 compressor packages in our fleet, ~~down~~up from ~~2,626~~2,531 units at ~~June 30, 2016.~~March 31, 2017. The rental fleet had a utilization of ~~49.3%~~47.5% as of ~~June 30, 2017~~March 31, 2018 compared to ~~55.7%~~49.8% utilization as of ~~June 30, 2016.~~March 31, 2017. The drop in utilization is mainly the result of compressor rental units being returned due to the ~~continuing depressed~~slow reaction to changes in oil and natural gas prices. We have experienced some relief in the number of sets versus returns over the ~~past few months, resulting in the smallest decline in our utilization since the start of 2015.~~last twelve months. In the event that oil and natural gas prices keep steady or continued to increase, we expect to see an increase in the utilization of our fleet.

Sales revenue ~~increased~~decreased to ~~$4.4~~$3.0 million from ~~$2.3~~$6.6 million for the three months ended ~~June 30, 2017~~March 31, 2018 compared to the same period ended ~~June 30, 2016.~~March 31, 2017. This ~~increase~~decrease is the result of fluctuations in timing of industry activity related to capital projects. We believe this timing is reflective of the typical sales cycle, resulting in fluctuating compressor unit sales to third parties from our Tulsa and Midland operations. We ~~also~~ had an increase in our flares product line during this comparative period, due to customer demand.

Our overall operating income ~~decreased $1.5 million~~was relatively flat at $350,000 compared to ~~$414,000 from $1.9 million~~$343,000 for the three months ended ~~June 30,~~March 31, 2018 and March 31, 2017, ~~compared to the same period ended June 30, 2016, largely due to the decrease in rental revenue, net of the increase in slaes revenue.~~respectively. Operating margin percentage ~~decreased to 3% from 11%~~also remained flat at 2% for the three months ended ~~June 30, 2017~~March 31, 2018 and ~~June 30, 2016, respectively.~~March 31, 2017. The low operating margin ~~decreased~~was due to the reduction in ~~rental~~ revenue.

Selling, general, and administrative expense ~~increased~~decreased to ~~$2.4~~$2.0 million from ~~$2.2~~$3.0 million for the three months ended ~~June 30,~~March 31, 2018, and March 31, 2017, ~~and June 30, 2016,~~ primarily due to ~~an increase~~a $1.1 million decrease in stock compensation expense.

Depreciation and amortization expense ~~decreased to $5.3~~was relatively flat at $5.4 million for the three months ended ~~June 30, 2017,~~March 31, 2018, compared to ~~$5.4~~$5.3 million for the period ended ~~June 30, 2016.~~March 31, 2017. This ~~decrease~~slight increase is the result of ~~fewer~~larger horsepower units being added to the ~~fleet and older units becoming fully depreciated.~~fleet. We added ~~only 11~~25 units to our fleet over the past 12 months, ~~to our fleet.~~with 19 being 400 horsepower or larger.

Provision for income tax was ~~$40,000~~$49,000 and ~~$605,000~~$92,000 for the three months ended ~~June 30,~~March 31, 2018 and March 31, 2017, ~~and June 30, 2016,~~ respectively. The decrease in the provision is due to a ~~decrease in taxable income and a~~ change in effective tax rate between the two periods.

~~Six months ended June 30, 2017, compared to the six months ended June 30, 2016.~~

The ~~table below shows our revenues and percentage of total revenues of each of our product lines for the six months ended June 30, 2017 and 2016.~~

Six months ended June 30,
(in thousands)
2017 2016
Rental $ 23,342
67 % $ 31,063
80 %
Sales 11,044
31 % 7,210
19 %
Service and Maintenance 734
2 % 497
1 %
Total $ 35,120

$ 38,770

Total revenue decreased to $35.1 million from $38.8 million, or 9.4%, for the six months ended June 30, 2017, compared to the same period ended June 30, 2016. Comparing the six months ended June 30, 2017 to the same period in 2016, rental revenue decreased 25% and sales revenue increased 53%.

Rental revenue decreased to $23.3 million from $31.1 million for the six months ended June 30, 2017, compared to the same period ended June 30, 2016. This decrease is the result of the number of units returned due to low oil and natural gas prices. We ended the quarter with 2,531 compressor packages in our rental fleet down from 2,626 units at June 30, 2016. The rental fleet had a utilization of 49.3%, as of June 30, 2017 compared to 55.7% utilization as of June 30, 2016. We have experienced some relief in the number of returns over the past few months, resulting in the smallest decline in our utilization since the start of 2015. In the event that oil and natural gas prices increase, we should see incremental utilization of our fleet.

Sales revenue increased to $11.0 million from $7.2 million for the six months ended June 30, 2017, compared to the same period ended June 30, 2016. This increase is the result of the fluctuations in timing of industry activity related to capital projects. We believe this timing is reflective of the typical sales cycle, resulting in fluctuating compressor unit sales to third parties from our Tulsa and Midland operations. There was also an increase in demand for flares during this comparative period, due to customer demand.

Our overall operating income decreased $4.8 million to $757,000 from $5.6 million for the six months ended June 30, 2017 compared to the same period ended 2016, largely due to a decrease in rental revenue, offset by the increase in sales revenue and by an increase in stock compensation expense. Operating margin percentage decreased to 2% from 15%, respectively, for the six months ended June 30, 2017 compared to the same period ended June 30, 2016. Our overall operating income and operating margin decreased due the reduction in rental revenue and an increase in stock compensation expense.

Selling, general, and administrative expense increased to $5.4 million from $4.7 million, for the six months ended June 30, 2017, as compared to the same period ended June 30, 2016, due to an increase in stock compensation expense.

Depreciation and amortization expense decreased to $10.6 million for the six months ended June 30, 2017, compared to $10.9 million for the period ended June 30, 2016. This decrease is the result of fewer units being added to the fleet and older units becoming fully depreciated. We added only 11 units over the past 12 months to our fleet.

~~Provision for income tax decreased to $132,000 from $1.8 million and is the result of the decrease in taxable income and a~~ change in effective tax rate ~~between~~is driven by the ~~two periods.~~U.S. government enacted Tax Cuts and Jobs Act (effective December 2017), which reduced the corporate rate from 35 percent to 21 percent.

Liquidity and Capital Resources

Our working capital positions as of ~~June 30, 2017~~March 31, 2018 and December 31, ~~2016~~2017 are set forth below:


	June 30,		December 31,		March 31,		December 31,
	2017		2016		2018		2017
	(in thousands)				(in thousands)
Current Assets:
Cash and cash equivalents	$	73,038	$	64,094	$	65,138	$	69,208
Trade accounts receivable, net	6,171		7,378		7,719		8,534
Inventory, net	25,431		25,833
Inventory					25,749		26,224
Prepaid income taxes	1,944		1,482		3,443		3,443
Prepaid expenses and other	1,921		972		329		817
Total current assets	108,505		99,759		102,378		108,226
Current Liabilities:
Line of credit	417		417
Accounts payable	1,309		971		1,322		4,162
Accrued liabilities	2,846		2,887		3,407		3,106
Deferred income	376		2,225		294		185
Total current liabilities	4,948		6,500		5,023		7,453
Total working capital	$	103,557	$	93,259	$	97,355	$	100,773

For the ~~six~~three months ended ~~June 30, 2017,~~ March 31, 2018, we invested ~~$654,000~~$8.7 million in property and equipment. During these three months, we’ve added $7.4 million in new equipment ~~for~~to our rental fleet, $1.4 million in payments related to the construction of our new corporate office and ~~service~~$477 thousand in vehicles. Our investment in property and equipment also includes any changes between work in progress related to rental fleet jobs started and completed during the period, this change was a decrease to the property and equipment of $529 thousand. Even though we have idle rental equipment, at times we do not have the specific type of equipment that our customers require, therefore we have to build new equipment to satisfy their needs. We financed this activity with cash flow from operations and cash on hand.

At ~~June 30, 2017,~~March 31, 2018, we had cash and cash equivalents of ~~$73.0~~$65.1 million compared to ~~$64.1~~$69.2 million at December 31, ~~2016.~~2017. Our cash flow from operations of ~~$10.2~~$5.1 million was offset by capital expenditures of ~~$654,000,~~$8.7 million, during the ~~six~~three months ended ~~June 30, 2017.~~March 31, 2018. We had working capital of ~~$103.6~~$97.4 million at ~~June 30, 2017~~March 31, 2018 compared to ~~$93.3~~$100.8 million at December 31, ~~2016.~~2017. On ~~June 30, 2017~~March 31, 2018 and December 31, ~~2016,~~2017, we had outstanding debt of $417,000, which is all related to our line of ~~credit and is classified as current.~~credit. We had positive net cash flow from operating activities of ~~$10.2~~$5.1 million during the first ~~six~~three months of ~~2017~~2018 compared to ~~$19.8~~$10.5 million for the first ~~six~~three months of ~~2016.~~2017. The cash flow from operations of ~~$10.2~~$5.1 million was primarily the result of the net income of ~~$627,000~~$225,000 and the non-cash items of depreciation of ~~$10.6~~$5.4 million, ~~$2.4 million~~$428,000 related to the expenses associated with stock-based compensation, ~~a decrease in deferred income taxes of $2.6 million~~ and a decrease in cash flows related to working capital and other of ~~$860,000.~~$1.0 million.

For the remainder of the fiscal year ~~2017~~2018 ~~and into 2018,~~, our overall plan is to continue monitoring and holding expenses in line with the anticipated level of activity, fabricate rental fleet equipment only in direct response to market requirements, emphasize marketing of our idle gas compressor units and limit bank borrowing in line with market conditions. For the remainder of ~~2017~~2018, our forecasted capital expenditures will be directly dependent upon our customers’ compression requirements and are not anticipated to exceed our internally generated cash flows and cash on hand. Any required capital will be for additions to our compressor rental fleet and/or addition or replacement of service vehicles. We believe that cash flows from operations, our current cash position and our line of credit will be sufficient to satisfy our capital and liquidity requirements for the foreseeable future. We may require additional capital to fund any unanticipated expenditures, including any acquisitions of other businesses, although that capital, beyond our line of credit, as discussed below may not be available to us when we need it or on acceptable terms.

We have a senior secured revolving credit agreement the ("Amended Credit Agreement") with JP Morgan Chase Bank, N.A. (the "Lender") with an aggregate commitment of $30 million, subject to collateral availability. We also have a right to request from the lender, on an uncommitted basis, an increase of up to $20 million on the aggregate commitment (which could potentially increase the commitment amount to $50 million). On August 31, 2017, we amended and renewed the Amended Credit Agreement, which was set to expire on December 31, 2017. The Credit Agreement Amendment extended the maturity date to December 31, 2020. No other material revisions were made to the credit facility.

Interest and Fees. Under the terms of the Amended Credit Agreement, we have the option of selecting the applicable variable rate for each revolving loan, or portion thereof, of either (a) LIBOR multiplied by the Statutory Reserve Rate (as defined in the Amended Credit Agreement), with respect to this rate, for Eurocurrency funding, plus the Applicable Margin (“LIBOR-based”), or (b) CB Floating Rate, which is the Lender's Prime Rate less the Applicable Margin; provided, however, that no more than three LIBOR-based borrowings under the agreement may be outstanding at any one time. For purposes of the LIBOR-based interest rate, the Applicable Margin is 1.50%. For purposes of the CB Floating Rate, the Applicable Margin is 1.50%. For the ~~half~~three month period ended ~~June 30, 2017~~March 31, 2018, our weighted average interest rate was ~~2.49%~~3.16%.

Security. The obligations under the Amended Credit Agreement are secured by a first priority lien on all of our inventory and accounts and leases receivables, along with a first priority lien on a variable number of our leased compressor equipment the book value of must be maintained at a minimum of 2.00 to 1.00 commitment coverage ratio (such ratio being equal to (i) the amount of the borrowing base as of such date to (ii) the amount of the commitment as of such date.)

Contractual Obligations and Commitments

We have contractual obligations and commitments that affect the results of operations, financial condition and liquidity. The following table is a summary of our significant cash contractual obligations as of ~~June 30, 2017:~~March 31, 2018:

Purchase obligations⁽³⁾

(1)For the ~~six~~nine months remaining in ~~2017~~2018.

(2)Assumes an interest rate of 4.0% and no additional borrowings.

(3)Vendor exclusive purchase agreement related to paint and coatings.

Critical Accounting Policies and Practices

There have been no changes in the critical accounting policies disclosed in the Company's Form 10-K for the year ended December 31, ~~2016~~2017.

Recently Issued Accounting Pronouncements

On February 25, 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-02, Leases (Topic 842). Under the new guidance, a lessee will be required to recognize assets and liabilities for capital and operating leases with lease terms of more than 12 months. Additionally, this ASU will require disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases, including qualitative and quantitative requirements. For public business entities, the amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. The new standard will be effective during our first quarter ending March 31, 2019. We are currently determining the impacts of the new standard on our condensed consolidated financial statements and the additional applicable disclosure requirements.

On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). This update provides a five-step analysis on how an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance also requires more detailed disclosures to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015, the FASB issued an accounting standards update for a one-year deferral of the revenue recognition standard’s effective date for all entities, which changed the effectiveness to interim and annual reporting periods beginning after December 15, 2017. As a result, we expect to adopt this guidance on January 1, 2018. The guidance offers two transition methods: a full retrospective approach to be applied to each prior reporting period presented or a modified retrospective approach where the cumulative effect of initially applying the standard is recognized at the date of initial application. We have not yet selected the transition method. We are currently determining the impacts of the new standard on our consolidated financial statements. Our approach includes performing a detailed review of key contracts that are representative of our various revenue streams and comparing our historical accounting policies and practices to the new standard. Our sales and service and maintenance contracts are more short-term in nature or can usually be completed within the same quarter they are started; but, at this stage in our assessment we are still evaluating the extent to which we will have changes, upon adoption. For the impact related to our rental revenues, we are still in the early stages of our review and have not concluded as to what impact, if any, there may be to our rental revenues. We expect to complete our review by mid-November 2017.

Off-Balance Sheet Arrangements

From time-to-time, we enter into off-balance sheet arrangements and transactions that can give rise to off-balance sheet obligations. As of ~~June 30, 2017,~~March 31, 2018, the off-balance sheet arrangements and transactions that we have entered into include operating lease agreements and purchase agreements. We do not believe that these arrangements are reasonably likely to materially affect our liquidity, availability of, or requirements for, capital resources.

Special Note Regarding Forward-Looking Statements

Except for historical information contained herein, the statements in this report are forward-looking and made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve known and unknown risks and uncertainties, which may cause our actual results in future periods to differ materially from forecasted results. Those risks include, among other things, the loss of market share through competition or otherwise; the introduction of competing technologies by other companies; a prolonged, substantial reduction in oil and natural gas prices which could cause a decline in the demand for our products and services; and new governmental safety, health and environmental regulations which could require us to make significant capital expenditures. The forward-looking statements included in this Form 10-Q are only made as of the date of this report, and we undertake no obligation to publicly update such forward-looking statements to reflect subsequent events or circumstances. A discussion of these and other risk factors is included in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~2017 filed with the SEC.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

There have been no changes in the market risks disclosed in the Company's Form 10-K for the year ended December 31, ~~2016~~2017.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures.

An evaluation was carried out under the supervision and with the participation of our management, including our President and Chief Executive Officer and our Vice President and Principal Accounting Officer, of the effectiveness of the design and of our “disclosure controls and procedures” (as such term is defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended or, the “Exchange Act”) as of the end of the period covered by this report pursuant to Exchange Act Rule 13a-15. Based upon that evaluation, the President and Chief Executive Officer and our Vice President and Principal Accounting Officer have concluded that our disclosure controls and procedures as of the end of the period covered by this report were effective to ensure that information required to be disclosed by us in the reports filed or submitted by us under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms. These include controls and procedures designed to ensure that information required to be disclosed by us in such reports is accumulated and communicated to our management, including our principal executive and financial officers as appropriate to allow timely decisions regarding required disclosures. Due to the inherent limitations of control systems, not all misstatements or omissions may be detected. Those inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because

of simple errors or mistakes. Additionally, controls could be circumvented by the individual acts of some persons or by collusion of two or more people. Our controls and procedures can only provide reasonable, not absolute, assurance that the above objectives have been met.

Changes in Internal Controls.

On January 1, 2018, the Company adopted ASU No. 2014-09, Revenue from Contracts with Customers using the modified retrospective method of transition applied to all contracts. This ASU formed ASC 606, Revenue from Contracts with Customers ("ASC 606"), which supersedes nearly all existing revenue recognition guidance under U.S. GAAP and includes a five step process to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services.

During the first quarter of 2018, we added internal control processes over financial reporting as a result of the adoption of ASC 606. There ~~were~~have been no other changes in our internal control over financial reporting ~~identified in connection with the evaluation required by paragraph (d) of Exchange Act Rules 13a-15 or 15d-15~~ that occurred during our ~~last~~fiscal quarter ended March 31, 2018, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1. Legal Proceedings

have a material adverse effect on our financial position, results of operations or cash flow. We are not currently a party to any material legal proceedings and we are not aware of any threatened litigation.

Item 1A. Risk Factors

Please refer to and read “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, ~~2016~~2017 for a discussion of the risks associated with our Company and industry.

Item 6. Exhibits

The following exhibits are filed herewith or incorporated herein by reference, as indicated:



Exhibit No.	Description

3.1	Articles of Incorporation, as amended (Incorporated by reference to Exhibit 3.1 of the 10-QSB filed and dated November 10, 2004)

3.2	Bylaws as amended (Incorporated by reference to Exhibit ~~3.4~~3.1 of the Registrant's ~~Registration Statement~~current report on ~~Form SB-2, No. 333-88314)~~form 8-K filed with the Securities and Exchange Commission on June 21, 2016.

~~4.1~~	~~Non-Statutory Stock Option Agreement (Incorporated by reference to Exhibit 10.2 to Form 8-K filed with the SEC on August 30, 2005)~~



10.1	Lease Agreement, dated ~~March 26, 2008,~~January 9, 2018, between WNB Tower, LTD and Natural Gas Services Group, Inc. (Incorporated by reference to Exhibit 10.15 of the Registrant’s Form 10-K for the fiscal year ended December 31, ~~2008~~2017 and filed with the Securities and Exchange Commission on March 9, ~~2009)~~2018.)

10.2	2009 Restricted Stock/Unit Plan, as amended (Incorporated by reference to Exhibit 99.1 of the Registrant’s Current Report on Form 8-K dated June 3, 2014 and filed with the Securities and Exchange Commission on June 6, 2014.)

10.3	Stock Option Plan, as amended and restated (Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on June 21, 2016.)

10.4	~~Lease Agreement, dated December 11, 2008, between Klement-Wes Partnership, LTD and Natural Gas Services Group, Inc. and commencing on January 1, 2009~~

~~10.5~~	Credit Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated December 10, 2010 (Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 24, 2014.)

~~10.6~~ 10.5	~~Third~~Fifth Amendment of Credit Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated ~~November 19, 2014~~August 31, 2017 (Incorporated by reference to Exhibit ~~10.1~~10.2 of the Registrant's Current report on Form 8-K filed with the Securities and Exchange Commission on ~~January 9, 2012.~~September 7, 2017.)

~~10.7~~ 10.6	Security Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated December 10, 2010 (Incorporated by reference to Exhibit 10.2 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on December 16, ~~2010.~~2011.)

~~10.8~~ 10.7	~~First Amendment of~~Fourth Security Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated ~~December~~August 31, ~~2011~~2017 (Incorporated by reference to Exhibit ~~10.2~~10.1 of the ~~Registrant's~~Registrant’s Current ~~report~~Report on Form 8-K filed with the Securities and Exchange Commission on ~~January 9, 2012.~~September 7, 2017.)

~~10.9~~ 10.8	Promissory Note in the aggregate amount of $30,000,000 issued to JPMorgan Chase Bank, N.A., dated ~~December~~August 31, ~~2014,~~2017, in connection with the revolving credit line under the Credit Agreement with JPMorgan Chase Bank, N.A. (Incorporated by reference to Exhibit ~~10.2~~10.3 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on ~~November 24, 2014.~~September 7, 2017.)

~~10.10~~ 10.9	Amended and restated Employment Agreement dated April 27, 2015 between Natural Gas Services Group, Inc. and Stephen C. Taylor (Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on April 29, 2015.)

~~10.11~~ 10.10	The Executive Nonqualified Excess Plan Adoption Agreement, referred to as the Nonqualified Deferred Compensation Plan (Incorporated by reference to Exhibit 10.11 of the Registrant's Quarterly report on Form 10-Q filed with the Securities and Exchange Commission on May 6, 2016.)



~~10.12~~ 10.11	Annual Incentive Bonus Plan (Incorporated by reference to Exhibit 10.1 of the Registrant's Current Report on Form 8-K filed with the Securities and Exchange Commission December 8,18, 2012.)

*31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

*31.2	Certification of Principal Accounting Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

*32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

*32.2	Certification of Principal Accounting Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

101.INS	XBRL Instance Document

101.SCH	XBRL Taxonomy Extension Schema Document

101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

101.LAB	XBRL Taxonomy Extension Label Linkbase Document

101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

	* Filed herewith.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

NATURAL GAS SERVICES GROUP, INC.



/s/ Stephen C. Taylor		/s/ G. Larry Lawrence
Stephen C. Taylor		G. Larry Lawrence
President and Chief Executive Officer		Vice President and Chief Financial Officer
(Principal Executive Officer)		(Principal Accounting Officer)

~~August 4, 2017~~May 10, 2018

~~INDEX TO EXHIBITS~~

~~The following exhibits are filed herewith or incorporated herein by reference, as indicated:~~



~~Exhibit No.~~	~~Description~~

~~3.1~~	~~Articles of Incorporation, as amended (Incorporated by reference to Exhibit 3.1 of the 10-QSB filed and dated November 10, 2004)~~

~~3.2~~	~~Bylaws (Incorporated by reference to Exhibit 3.4 of the Registrant's Registration Statement on Form SB-2, No. 333-88314)~~

~~4.1~~	~~Non-Statutory Stock Option Agreement (Incorporated by reference to Exhibit 10.2 to Form 8-K filed with the SEC on August 30, 2005)~~



~~10.1~~	Lease Agreement, dated March 26, 2008, between WNB Tower, LTD and Natural Gas Services Group, Inc. (Incorporated by reference to Exhibit 10.15 of the Registrant’s Form 10-K for the fiscal year ended December 31, 2008 and filed with the Securities and Exchange Commission on March 9, 2009)

~~10.2~~	2009 Restricted Stock/Unit Plan, as amended (Incorporated by reference to Exhibit 99.1 of the Registrant’s Current Report on Form 8-K dated June 3, 2014 and filed with the Securities and Exchange Commission on June 6, 2014.)

~~10.3~~	Stock Option Plan, as amended and restated (Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on June 21, 2016.)

~~10.4~~	~~Lease Agreement, dated December 11, 2008, between Klement-Wes Partnership, LTD and Natural Gas Services Group, Inc. and commencing on January 1, 2009~~

~~10.5~~	Credit Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated December 10, 2010 (Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 24, 2014.)

~~10.6~~	Third Amendment of Credit Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated November 19, 2014 (Incorporated by reference to Exhibit 10.1 of the Registrant's Current report on Form 8-K filed with the Securities and Exchange Commission on January 9, 2012.)

~~10.7~~	Security Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated December 10, 2010 (Incorporated by reference to Exhibit 10.2 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on December 16, 2010.)

~~10.8~~	First Amendment of Security Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated December 31, 2011 (Incorporated by reference to Exhibit 10.2 of the Registrant's Current report on Form 8-K filed with the Securities and Exchange Commission on January 9, 2012.)

~~10.9~~	Promissory Note in the aggregate amount of $30,000,000 issued to JPMorgan Chase Bank, N.A., dated December 31, 2014, in connection with the revolving credit line under the Credit Agreement with JPMorgan Chase Bank, N.A. (Incorporated by reference to Exhibit 10.2 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 24, 2014.)

~~10.10~~	Amended and restated Employment Agreement dated April 27, 2015 between Natural Gas Services Group, Inc. and Stephen C. Taylor (Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on April 29, 2015.)

~~10.11~~	The Executive Nonqualified Excess Plan Adoption Agreement, referred to as the Nonqualified Deferred Compensation Plan (Incorporated by reference to Exhibit 10.11 of the Registrant's Quarterly report on Form 10-Q filed with the Securities and Exchange Commission on May 6, 2016.)



~~10.12~~	~~Annual Incentive Bonus Plan (Incorporated by reference to Exhibit 10.1 of the Registrant's Current Report on Form 8-K filed with the Securities and Exchange Commission December 8, 2012.)~~

*31.1	~~Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002~~

*31.2	~~Certification of Principal Accounting Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002~~

*32.1	~~Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002~~

*32.2	~~Certification of Principal Accounting Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002~~

~~101.INS~~	~~XBRL Instance Document~~

~~101.SCH~~	~~XBRL Taxonomy Extension Schema Document~~

~~101.CAL~~	~~XBRL Taxonomy Extension Calculation Linkbase Document~~

~~101.DEF~~	~~XBRL Taxonomy Extension Definition Linkbase Document~~

~~101.LAB~~	~~XBRL Taxonomy Extension Label Linkbase Document~~

~~101.PRE~~	~~XBRL Taxonomy Extension Presentation Linkbase Document~~

	* Filed herewith.



Large accelerated filer o	Accelerated filer x	Non-accelerated filer o	Smaller reporting company o	Emerging growth company o
		(Do not check if smaller reporting company)



Part I - FINANCIAL INFORMATION

Item 1. Consolidated Financial Statements

Unaudited Condensed Consolidated Balance Sheets	Page	1

Unaudited Condensed Consolidated Income Statements	Page	2

Unaudited Condensed Consolidated Statements of Cash Flows	Page	3

Notes to Unaudited Condensed Consolidated Financial Statements	Page	4

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	Page	1112

Item 3. Quantitative and Qualitative Disclosures about Market Risk	Page	17

Item 4. Controls and Procedures	Page	17

Part II - OTHER INFORMATION

Item 1. Legal Proceedings	Page	1718

Item 1A. Risk Factors	Page	18

Item 6. Exhibits	Page	X19

Signatures	Page	21


NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED BALANCE SHEETS (in thousands, except per share amounts) (unaudited)	NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED BALANCE SHEETS (in thousands, except per share amounts) (unaudited)				NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED BALANCE SHEETS (in thousands, except per share amounts) (unaudited)

	June 30,		December 31,		March 31,		December 31,
	2017		2016		2018		2017
ASSETS
Current Assets:
Cash and cash equivalents	$	73,038	$	64,094	$	65,138	$	69,208
Trade accounts receivable, net of allowance for doubtful accounts of $646 and $597, respectively	6,171		7,378
Inventory, net	25,431		25,833
Trade accounts receivable, net of allowance for doubtful accounts of $495 and $569, respectively					7,719		8,534
Inventory					25,749		26,224
Prepaid income taxes	1,944		1,482		3,443		3,443
Prepaid expenses and other	1,921		972		329		817
Total current assets	108,505		99,759		102,378		108,226
Rental equipment, net of accumulated depreciation of $135,924 and $126,096, respectively	164,553		174,060
Property and equipment, net of accumulated depreciation of $11,184 and $11,267 respectively	7,290		7,753
Long-term inventory, net of allowance for obsolescence of $21 and $15, respectively					3,315		2,829
Rental equipment, net of accumulated depreciation of $150,859 and $145,851, respectively					168,790		167,099
Property and equipment, net of accumulated depreciation of $11,528 and $11,274, respectively					9,277		7,652
Goodwill	10,039		10,039		10,039		10,039
Intangibles, net of accumulated amortization of $1,570 and $1,508, respectively	1,589		1,651
Intangibles, net of accumulated amortization of $1,664 and $1,632, respectively					1,495		1,526
Other assets	798		262		1,066		939
Total assets	$	292,774	$	293,524	$	296,360	$	298,310
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
Line of credit	$	417	$	417
Accounts payable	1,309		971		$	1,322	$	4,162
Accrued liabilities	2,846		2,887		3,407		3,106
Deferred income	376		2,225		294		185
Total current liabilities	4,948		6,500		5,023		7,453
Line of credit, non-current portion					417		417
Deferred income tax liability	51,136		53,745		32,211		32,163
Other long-term liabilities	820		325		1,075		958
Total liabilities	56,904		60,570		38,726		40,991
Commitments and contingencies (Note 9)
Commitments and contingencies (Note 8)
Stockholders’ Equity:
Preferred stock, 5,000 shares authorized, no shares issued or outstanding	—		—		—		—
Common stock, 30,000 shares authorized, par value $0.01; 12,838 and 12,764 shares issued and outstanding, respectively	128		128
Common stock, 30,000 shares authorized, par value $0.01; 12,949 and 12,880 shares issued and outstanding, respectively					129		129
Additional paid-in capital	103,101		100,812		105,415		105,325
Retained earnings	132,641		132,014		152,090		151,865
Total stockholders' equity	235,870		232,954		257,634		257,319
Total liabilities and stockholders' equity	$	292,774	$	293,524	$	296,360	$	298,310


NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED INCOME STATEMENTS (in thousands, except earnings per share) (unaudited)	NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED INCOME STATEMENTS (in thousands, except earnings per share) (unaudited)												NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED INCOME STATEMENTS (in thousands, except earnings per share) (unaudited)

	Three months ended						Six months ended						Three months ended
	June 30,						June 30,						March 31,
	2017			2016			2017			2016			2018			2017
Revenue:
Rental income	$	11,420		$	14,655		$	23,342		$	31,063		$	11,471		$	11,922
Sales	4,407			2,300			11,044			7,210			2,998			6,637
Service and maintenance income	391			239			734			497			249			343
Total revenue	16,218			17,194			35,120			38,770			14,718			18,902
Operating costs and expenses:
Cost of rentals, exclusive of depreciation stated separately below	4,255			5,411			8,923			11,105			4,704			4,668
Cost of sales, exclusive of depreciation stated separately below	3,745			2,236			9,168			6,168			2,191			5,423
Cost of service and maintenance	104			85			198			196			65			94
Selling, general and administrative expense	2,390			2,152			5,436			4,721			2,021			3,046
Depreciation and amortization	5,310			5,437			10,638			10,940			5,387			5,328
Total operating costs and expenses	15,804			15,321			34,363			33,130			14,368			18,559
Operating income	414			1,873			757			5,640			350			343
Other income (expense):
Interest expense	(2		)	(2		)	(4		)	(4		)	(3		)	(2		)
Other income (expense), net	3			(7		)	6			12
Total other income (expense), net	1			(9		)	2			8
Other (expense) income , net													(73		)	3
Total other (expense) income, net													(76		)	1
Income before provision for income taxes	415			1,864			759			5,648			274			344
Provision for income taxes	40			605			132			1,848			49			92
Net income	$	375		$	1,259		$	627		$	3,800		$	225		$	252
Earnings per share:
Basic	$	0.03		$	0.10		$	0.05		$	0.30		$	0.02		$	0.02
Diluted	$	0.03		$	0.10		$	0.05		$	0.29		$	0.02		$	0.02
Weighted average shares outstanding:
Basic	12,831			12,709			12,818			12,678			12,920			12,804
Diluted	13,130			12,936			13,093			12,887			13,169			13,056


NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (in thousands) (unaudited)	NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (in thousands) (unaudited)						NATURAL GAS SERVICES GROUP, INC. CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (in thousands) (unaudited)
	Six months ended						Three months ended
	June 30,						March 31,
	2017			2016			2018			2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	627		$	3,800		$	225		$	252
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,638			10,940			5,387			5,328
Deferred income taxes	(2,609		)	(770		)	48			(1,266		)
Stock-based compensation	2,416			1,186			428			1,532
Bad debt allowance	60			61			(50		)	60
Inventory allowance	—			32
Gain on sale of assets	(49		)	(25		)	—			(27		)
Gain on company owned life insurance	(17		)	(4		)
Loss (gain) on company owned life insurance							67			(12		)
Changes in operating assets and liabilities:
Trade accounts receivables	1,147			4,034			865			2,637
Inventory	450			3,179			15			1,661
Prepaid expenses and prepaid income taxes	(1,411		)	(1,532		)	488			1,930
Accounts payable and accrued liabilities	297			(1,430		)	(2,539		)	68
Deferred income	(1,849		)	286			109			(1,741		)
Other	512			84			85			43
Tax benefit from equity compensation	—			(39		)
NET CASH PROVIDED BY OPERATING ACTIVITIES	10,212			19,802			5,128			10,465
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(654		)	(2,618		)
Purchase of rental equipment and property and equipment							(8,712		)	(144		)
Purchase of company owned life insurance	(529		)	(105		)	(139		)	(93		)
Proceeds from sale of property and equipment	49			25			—			27
NET CASH USED IN INVESTING ACTIVITIES	(1,134		)	(2,698		)	(8,851		)	(210		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments from other long-term liabilities, net	(7		)	(6		)	(9		)	(4		)
Proceeds from exercise of stock options	517			406			157			517
Taxes paid related to net share settlement of equity awards	(644		)	(909		)	(495		)	(492		)
Tax benefit from equity compensation	—			39
NET CASH USED IN FINANCING ACTIVITIES	(134		)	(470		)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES							(347		)	21
NET CHANGE IN CASH AND CASH EQUIVALENTS	8,944			16,634			(4,070		)	10,276
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	64,094			35,532			69,208			64,094
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	73,038		$	52,166		$	65,138		$	74,370
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid	$	4		$	4		$	3		$	2
Income taxes paid	$	3,203		$	4,435		$	—		$	—
NON-CASH TRANSACTIONS
Transfer of rental equipment components to inventory	$	48		$	164		$	40		$	48


	June 30, 2017		December 31, 2016		March 31, 2018		December 31, 2017
	(in thousands)				(in thousands)
Raw materials	$	19,098	$	18,365
Raw materials - current					$	21,482	$	22,813
Raw materials - long term					3,315		2,829
Finished Goods	1,006		2,558		1,022		1,022
Work in process	5,327		4,910		3,245		2,389
	$	25,431	$	25,833	$	29,064	$	29,053


For the three months ended June 30, 2017 (in thousands):
For the three months ended March 31, 2018 (in thousands):												For the three months ended March 31, 2018 (in thousands):
	Rental		Sales		Service & Maintenance		Corporate			Total		Rental		Sales		Service & Maintenance		Corporate			Total
Revenue	$	11,420	$	4,407	$	391	$	—		$	16,218	$	11,471	$	2,998	$	249	$	—		$	14,718
Operating costs and corporate expenses	4,255		3,745		104		7,700			15,804		4,704		2,191		65		7,408			14,368
Total other expense, net	—		—				1			1		—		—		—		(76		)	(76		)
Income before provision for income taxes	$	7,165	$	662	$	287	$	(7,699	)	$	415	$	6,767	$	807	$	184	$	(7,484	)	$	274


For the six months ended June 30, 2016 (in thousands):
For the three months ended March 31, 2017 (in thousands):												For the three months ended March 31, 2017 (in thousands):
	Rental		Sales		Service & Maintenance		Corporate			Total		Rental		Sales		Service & Maintenance		Corporate			Total
Revenue	$	31,063	$	7,210	$	497	$	—		$	38,770	$	11,922	$	6,637	$	343	$	—		$	18,902
Operating costs and expenses	11,105		6,168		196		15,661			33,130
Operating costs and corporate expenses												4,668		5,423		94		8,374			18,559
Total other income, net	—		—		—		8			8		—		—		—		1			1
Income before provision for income taxes	$	19,958	$	1,042	$	301	$	(15,653	)	$	5,648	$	7,254	$	1,214	$	249	$	(8,373	)	$	344


	Revenue Three months ended June 30,								Revenue Three months ended March 31,
	(in thousands)								(in thousands)
	2017				2016				2018				2017
Rental	$	11,420	71	%	$	14,655	85	%	$	11,471	78	%	$	11,922	63	%
Sales	4,407		27	%	2,300		14	%	2,998		20	%	6,637		35	%
Service and Maintenance	391		2	%	239		1	%	249		2	%	343		2	%
Total	$	16,218			$	17,194			$	14,718			$	18,902



	Six months ended June 30,
	(in thousands)
	2017				2016
Rental	$	23,342	67	%	$	31,063	80	%
Sales	11,044		31	%	7,210		19	%
Service and Maintenance	734		2	%	497		1	%
Total	$	35,120			$	38,770


	Obligations Due in Period (in thousands)												Obligations Due in Period (in thousands)
Cash Contractual Obligations	2017 ⁽¹⁾		2018		2019		2020		Thereafter		Total		2018 ⁽¹⁾		2019		2020		2021		Thereafter		Total
Line of credit (secured)	$	417	$	—	$	—	$	—	$	—	$	417	$	—	$	—	$	417	$	—	$	—	$	417
Interest on line of credit⁽²⁾	8		—		—		—		—		8		13		17		17		—		—		47
Purchase obligations⁽³⁾	181		300		300		300		639		1,720		157		300		300		300		266		1,323
Other long-term liabilities	—		—		—		—		108		108		—		—		—		—		83		83
Facilities and office leases	209		284		59		—		—		552		379		122		9		1		—		511
Total	$	815	$	584	$	359	$	300	$	747	$	2,805	$	549	$	439	$	743	$	301	$	349	$	2,381



Yes x		No o



Yes x		No o



Yes o		No x