Our financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Such statements require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. We have evaluated subsequent events for recognition or disclosure in our condensed consolidated financial statements.

We also assess collectability of the customer contract revenue prior to recognition. None of these customer contracts include a significant financing component. Customer contract revenue for the sixnine months ended JuneSeptember 30, 2018 does not include any amounts that were from obligations satisfied (or partially satisfied) in prior periods, or was a contract liability at January 1, 2018.

These sales primarily fall under two types of contracts (1) sales of nonfinancial assets and (2) sales of investments in real estate joint ventures and partnerships. We review the sale contract to determine appropriate accounting guidance. Profits on sales of real estate are primarily not recognized until (a) a contract exists including: each party’s rights are identifiable along with the payment terms, the contract has commercial substance and the collection of consideration is probable; and (b) the performance obligation to transfer control of the asset has occurred; including transfer to the buyer of the usual risks and rewards of ownership.

We recognize gains on the sale of real estate to joint ventures and partnerships in which we participate to the extent we receive cash from the joint venture or partnership, if it meets the sales criteria in accordance with GAAP.

If such an event occurs, a comparison is made of the current and projected operating cash flows of each such property into the foreseeable future, with consideration of applicable holding periods, on an undiscounted basis to the carrying amount of such property. If we determine the carrying amount is not recoverable, our basis in the property is reduced to its estimated fair value to reflect impairment in the value of the asset. Fair values are determined by management utilizing cash flow models, market capitalization rates and market discount rates, or by obtaining third-party broker or appraisal estimates in accordance with our fair value measurements accounting policy.

We review economic considerations at each reporting period, including the effects of tenant bankruptcies, the suspension of tenant expansion plans for new development projects, declines in real estate values, and any changes to plans related to our new development properties including land held for development, to identify properties where we believe market values may be deteriorating. Determining whether a property is impaired and, if impaired, the amount of write-down to fair value requires a significant amount of judgment by management and is based on the best information available to management at the time of evaluation. If market conditions deteriorate or management’s plans for certain properties change, additional write-downs could be required in the future.

Our investment in partially owned real estate joint ventures and partnerships is reviewed for impairment each reporting period. The ultimate realization is dependent on a number of factors, including the performance of each investment and market conditions. We will record an impairment charge if we determine that a decline in the estimated fair value of an investment below its carrying amount is other than temporary. There is no certainty that impairments will not occur in the future if market conditions decline or if management’s plans for these investments change.

Our investments in tax increment revenue bonds are reviewed for impairment, including the evaluation of changes in events or circumstances that may indicate that the carrying amount of the investment may not be recoverable. Realization is dependent on a number of factors, including investment performance, market conditions and payment structure. We will record an impairment charge if we determine that a decline in the value of the investment below its carrying amount is other than temporary, recovery of its cost basis is uncertain, and/or it is uncertain if the investment will be held to maturity.

Accrued contract receivables are reviewed for impairment based on changes in events or circumstances effecting our customers that may indicate that the carrying value of the asset may not be recoverable. An impairment charge will be recorded if we determine that the decline in the asset value is other than temporary or recovery of the cost basis is uncertain. Factors to be considered include current economic trends such as bankruptcy and market conditions affecting our investments in partially owned real estate joint ventures and partnerships.

Our restricted deposits and mortgage escrows consist of the following (in thousands):

The adoption resulted in the identification of primarily three types of customer contracts: (1) management contracts with partially owned real estate joint ventures or partnerships or third parties, (2) licensing and occupancy agreements and (3) certain non-tenant contracts. We will continue to recognize these fees as we currently do with the exception of the timing associated with the performance obligation in our management contracts related to leasing and lease preparation related services. Upon adoption, we recognized the cumulative effect for these fees which has increased retained earnings and accrued rent, accrued contract receivables and accounts receivable, net each by $.3 million. In addition, we evaluated controls around the implementation of this ASU and have concluded there was no significant impact on our control structure. We have included our customer contract revenues under the caption Other revenues in the Condensed Consolidated Statements of Operations and have expanded our disclosures related to this ASU in Note 1.

In January 2016, the FASB issued ASU No. 2016-01, "Recognition and Measurement of Financial Assets and Financial Liabilities." This ASU will require equity investments, excluding those investments accounted for under the equity method of accounting or those that result in consolidation of the investee, to be measured at fair value with the changes in fair value recognized in net income; will simplify the impairment assessment of those investments; will eliminate the disclosure of the method(s) and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost and change the fair value calculation for those investments; will change the disclosure in other comprehensive income for financial liabilities that are measured at fair value in accordance with the fair value options for financial instruments; and will clarify that a deferred asset related to available-for-sale securities should be included in an entity's evaluation for a valuation allowance. The provisions of ASU No. 2016-01 were effective for us as of January 1, 2018 and are required to be applied on a modified retrospective approach. Upon adoption, we recognized the cumulative effect for the fair value of equity investments which has increased retained earnings and accumulated other comprehensive loss each by $1.5 million and includes the effects of ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income."

In February 2017, the FASB issued ASU No. 2017-05, "Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets." The ASU clarifies that a financial asset is within the scope of Subtopic 610-20 if it meets the definition, as amended, of an in substance nonfinancial asset. If substantially all of the fair value of assets that are promised to a counterparty in a contract is concentrated in nonfinancial assets, then all of the financial assets promised to the counterparty are in substance nonfinancial assets within the scope of Subtopic 610-20, including a parent transferring control of a nonfinancial asset through a transfer of ownership interests of a consolidated subsidiary. The provisions of ASU No. 2017-05 were effective for us as of January 1, 2018 and depending on the contract type may be recorded on a retrospective or modified retrospective approach. As a result of our contract analysis under ASU 2014-09, the majority of our contracts relate to property sales to be accounted for under this ASU and could result in future gains being recognized sooner. Upon adoption, we applied the modified retrospective approach for all contract types and for contracts considered not completed. We recognized the cumulative effect for in substance nonfinancial assets in which gains would have been realized and have increased each of retained earnings and other assets by $3.6 million at January 1, 2018.

In March 2017, the FASB issued ASU No. 2017-07, "Improving the Presentation of Net Periodic Pensions Cost and Net Periodic Postretirement Benefit Cost." The ASU requires the service cost component to be reported as compensation costs arising from services rendered by pertinent employees during the period. The other components of net periodic benefit cost are required to be presented in the income statement separately from the service cost component and outside income from operations. Additionally, only the service cost component will be eligible for capitalization when applicable. The provisions of ASU No. 2017-07 were effective for us as of January 1, 2018 on a retrospective basis for the presentation within the income statement and prospectively for the capitalization of costs. The adoption of this ASU did not have a material impact to our consolidated financial statements. We have elected to use the practical expedient in determining estimates for applying the retrospective presentation requirements. For the three and sixnine months ended JuneSeptember 30, 2017, net periodic benefit cost, excluding the service cost component, of $.1 million and $.2$.3 million, respectively, was included in Interest and Other Income/Expense in our Condensed Consolidated Statements of Operations. For the year ended December 31, 2017, net periodic benefit cost, excluding the service cost component, was $.4 million.

In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging - Targeted Improvements to Accounting for Hedging Activities." The ASU amends current hedge accounting recognition and presentation requirements. Items focused on include: alignment of an entity’s risk management activities and its financial reporting for hedging relationships, the use of hedge accounting for risk components in hedging relationships involving nonfinancial risk and interest rate risk, updates for designating fair value hedges of interest rate risk and measuring the related change in fair value of the hedged item, alignment of the recognition and presentation of the effects of the hedging instrument and the hedged item, and permits an entity to exclude certain amounts related to currency swaps. Lastly, the ASU also provides additional relief on effectiveness testing methods and disclosures. The provisions of ASU No. 2017-12 are effective for us as of January 1, 2019, and early adoption is permitted. We have adopted this ASU as of January 1, 2018, which required the modified retrospective transition method upon adoption. The adoption of this ASU did not have a material impact to our consolidated financial statements.

In February 2018, the FASB issued ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." ASU No. 2018-02 allows for the reclassification of the stranded tax effects resulting from the Tax Cuts and Jobs Act to retained earnings. The provisions of ASU No. 2018-02 are effective for us as of January 1, 2019, may be applied either at the beginning of the period of adoption or retrospectively, and early adoption is permitted. We adopted this ASU along with the adoption of ASU No. 2016-01 on January 1, 2018.

We are in the process of evaluating the impact to our 5,100 lessor leases and other lessee leases, if any, that the adoption of this ASU will have on our consolidated financial statements. Within our lessor leases, we are entitled to receive tenant reimbursements for operating expenses such as real estate taxes, insurance and common area maintenance (“CAM”). Currently upon adoption of theseThese ASUs have defined CAM reimbursement revenue as a non-lease component, which may need to be accounted for in accordance with Topic 606 (ASU No. 2014-09 as discussed above) if certain criteria has not been met or if the non-lease component is predominate to the combined components within a contract.

We have currently identified some areas we believe may be impacted by these ASUs. These include:

In June 2016, the FASB issued ASU No. 2016-13, "Measurement of Credit Losses on Financial Instruments." This ASU amends prior guidance on the impairment of financial instruments, and adds an impairment model that is based on expected losses rather than incurred losses with the recognition of an allowance based on an estimate of expected credit losses. The provisions of ASU No. 2016-13 are effective for us as of January 1, 2020, and early adoption is permitted for fiscal years beginning after December 15, 2018. We are currently assessing the impact, if any, that the adoption of this ASU will have on our consolidated financial statements.

Our property consists of the following (in thousands):

During the sixnine months ended JuneSeptember 30, 2018, we sold 1417 centers and other property. Aggregate gross sales proceeds from these transactions approximated $334.1$381.7 million and generated gains of approximately $156.0$173.1 million, including properties previously classified as held for sale. Also, during the sixnine months ended JuneSeptember 30, 2018, we invested $40.3$54.7 million in new development projects.

At JuneSeptember 30, 2018, two centers, totaling $35.5$111.3 million before accumulated depreciation, were classified as held for sale. At December 31, 2017, three centers, totaling $78.7 million before accumulated depreciation, were classified as held for sale. None of these centers qualified to be reported in discontinued operations.

We own interests in real estate joint ventures or limited partnerships and have tenancy-in-common interests in which we exercise significant influence, but do not have financial and operating control. We account for these investments using the equity method, and our interests ranged for the periods presented from 20% to 90% in 2018 and 2017. Combined condensed financial information of these ventures (at 100%) is summarized as follows (in thousands):

Our investment in real estate joint ventures and partnerships, as reported in our Condensed Consolidated Balance Sheets, differs from our proportionate share of the entities' underlying net assets due to basis differences, which arose upon the transfer of assets to the joint ventures. The net positive basis differences, which totaled $3.8$4.4 million and $2.2 million at JuneSeptember 30, 2018 and December 31, 2017, respectively, are generally amortized over the useful lives of the related assets.

During 2017, two centers were sold with aggregate gross sales proceeds of approximately $19.6 million, of which our share of the gain, included in equity earnings in real estate joint ventures and partnerships, totaled $6.2 million. In June 2017, a venture acquired land with a gross purchase price of $23.5 million for a mixed-use development project, and we simultaneously increased our ownership interest to 90% (See Note 15 for additional information).

Our debt consists of the following (in thousands):

The allocation of total debt between fixed and variable-rate as well as between secured and unsecured is summarized below (in thousands):

The fair value of all our interest rate swap contracts was reported as follows (in thousands):

The gross presentation, the effects of offsetting for derivatives with the right to offset under master netting agreements and the net presentation of our interest rate swap contracts is as follows (in thousands):

A summary of cash flow interest rate swap contract hedging activity is as follows (in thousands):

The following impairment charges were recorded on the following assets based on the difference between the carrying amount of the assets and the estimated fair value (see Note 16 for additional fair value information) (in thousands):

Cash, cash equivalents and restricted cash equivalents consists of the following (in thousands):

Non-cash investing and financing activities are summarized as follows (in thousands):

Earnings per common share – basic is computed using net income attributable to common shareholders and the weighted average number of shares outstanding – basic. Earnings per common share – diluted includes the effect of potentially dilutive securities. Income from continuing operations attributable to common shareholders includes gain on sale of property in accordance with Securities and Exchange Commission guidelines. Earnings per common share – basic and diluted components for the periods indicated are as follows (in thousands):

Anti-dilutive securities of our common shares, which are excluded from the calculation of earnings per common share – diluted, are as follows (in thousands):

The fair value of the market-based share awards was estimated on the date of grant using a Monte Carlo valuation model based on the following assumptions: