Recent Accounting Pronouncements	6 Months Ended
Jun. 30, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently issued accounting pronouncements not yet adopted In April 2019, the Financial Accounting Standards Board ("FASB") issued guidance to amend or clarify certain areas within three previously issued standards related to financial instruments which includes clarification for fair value using the measurement alternative, measuring credit losses and accounting for derivatives and hedging. The amendments in this guidance are largely effective for fiscal years beginning after December 15, 2019 with early adoption permitted. We have not elected early adoption and do not anticipate that this guidance will have a material impact on our condensed consolidated financial statements. In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans ("ASU 2018-14"), which modifies the disclosure requirements for defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for fiscal years ending after December 15, 2020, and earlier adoption is permitted. We are currently evaluating the impact of our pending adoption of ASU 2018-14 on our condensed consolidated financial statements. Recently adopted accounting pronouncements Income taxes In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU allows for reclassification of stranded tax effects on items resulting from the change in the corporate tax rate as a result of H.R. 1, originally known as the Tax Cuts and Jobs Act of 2017, from accumulated other comprehensive income to retained earnings. Tax effects unrelated to H.R. 1 are permitted to be released from accumulated other comprehensive income using either the specific identification approach or the portfolio approach, based on the nature of the underlying item. ASU 2018-02 is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted. We adopted ASU 2018-02 in the first quarter of 2019. See Note I, Income Taxes, for a discussion of the impacts of this ASU. Stock-based Compensation In June 2018, the FASB issued ASU 2018-07, Compensation-Stock Compensation (Topic 718): Improvements to nonemployee share-based payment accounting, which supersedes ASC 505-50, Accounting for Distributions to Shareholders with Components of Stock and Cash, and expands the scope of ASC 718 to include all share-based payment arrangements related to the acquisition of goods and services from both non-employees and employees. As a result, most of the guidance in ASC 718 associated with employee share-based payments, including most of its requirements related to classification and measurement, applies to non-employee share-based payment arrangements. The ASU is effective for annual periods beginning after December 15, 2018, and the interim periods within those fiscal years with early adoption permitted after the entity has adopted ASC 606. This standard was adopted as of January 1, 2019 and did not have a material impact on our condensed consolidated financial statements and related disclosures. Leases In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) and subsequent amendment ASU 2018-11, which requires all operating leases to be recorded on the balance sheet. The lessee will record a liability for its lease obligations (initially measured at the present value of the future lease payments not yet paid over the lease term, and an asset for its right to use the underlying asset equal to the lease liability, adjusted for lease payments made at or before lease commencement). This ASU is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. This change is required to be applied using a modified retrospective approach for leases that exist or are entered after the beginning of the earliest comparative period in the financial statements. Full retrospective application is prohibited. In July 2018, the FASB approved an optional transition method to initially account for the impact of the adoption with a cumulative-effect adjustment to the January 1, 2019, rather than the January 1, 2017, financial statements. This will eliminate the need to restate amounts presented prior to January 1, 2019. We adopted the standard effective January 1, 2019, and we elected the optional transition method and the practical expedients permitted under the transition guidance within the standard. Accordingly, we accounted for our existing operating leases as operating leases under the new guidance, without reassessing (a) whether the contracts contain a lease under ASC Topic 842, (b) whether classification of the operating leases would be different in accordance with ASC Topic 842, or (c) whether the unamortized initial direct costs before transition adjustments (as of December 31, 2018) would have met the definition of initial direct costs in ASC Topic 842 at lease commencement. The standard had a material impact on our condensed consolidated balance sheets, but did not have an impact on our condensed consolidated statements of comprehensive (loss) income or cash flows from operations. The cumulative effect of the changes on our retained earnings was $22 thousand associated with capital gain. The most significant impact was the recognition of right-of-use (ROU) assets and lease liabilities for operating leases. Our accounting for finance leases remained substantially unchanged. See Note D, Leases for further discussion.

Recent Accounting Pronouncements

Recently issued accounting pronouncements not yet adopted

In April 2019, the Financial Accounting Standards Board ("FASB") issued guidance to amend or clarify certain areas within three previously issued standards related to financial instruments which includes clarification for fair value using the measurement alternative, measuring credit losses and accounting for derivatives and hedging. The amendments in this guidance are largely effective for fiscal years beginning after December 15, 2019 with early adoption permitted. We have not elected early adoption and do not anticipate that this guidance will have a material impact on our condensed consolidated financial statements.

In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans ("ASU 2018-14"), which modifies the disclosure requirements for defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for fiscal years ending after December 15, 2020, and earlier adoption is permitted. We are currently evaluating the impact of our pending adoption of ASU 2018-14 on our condensed consolidated financial statements.

Recently adopted accounting pronouncements

Income taxes

In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU allows for reclassification of stranded tax effects on items resulting from the change in the corporate tax rate as a result of H.R. 1, originally known as the Tax Cuts and Jobs Act of 2017, from accumulated other comprehensive income to retained earnings. Tax effects unrelated to H.R. 1 are permitted to be released from accumulated other comprehensive income using either the specific identification approach or the portfolio approach, based on the nature of the underlying item. ASU 2018-02 is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted. We adopted ASU 2018-02 in the first quarter of 2019. See Note I, Income Taxes, for a discussion of the impacts of this ASU.

Stock-based Compensation

In June 2018, the FASB issued ASU 2018-07, Compensation-Stock Compensation (Topic 718): Improvements to nonemployee share-based payment accounting, which supersedes ASC 505-50, Accounting for Distributions to Shareholders with Components of Stock and Cash, and expands the scope of ASC 718 to include all share-based payment arrangements related to the acquisition of goods and services from both non-employees and employees. As a result, most of the guidance in ASC 718 associated with employee share-based payments, including most of its requirements related to classification and measurement, applies to non-employee share-based payment arrangements. The ASU is effective for annual periods beginning after December 15, 2018, and the interim periods within those fiscal years with early adoption permitted after the entity has adopted ASC 606. This standard was adopted as of January 1, 2019 and did not have a material impact on our condensed consolidated financial statements and related disclosures.

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) and subsequent amendment ASU 2018-11, which requires all operating leases to be recorded on the balance sheet. The lessee will record a liability for its lease obligations (initially measured at the present value of the future lease payments not yet paid over the lease term, and an asset for its right to use the underlying asset equal to the lease liability, adjusted for lease payments made at or before lease commencement). This ASU is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. This change is required to be applied using a modified retrospective approach for leases that exist or are entered after the beginning of the earliest comparative period in the financial statements. Full retrospective application is prohibited. In July 2018, the FASB approved an optional transition method to initially account for the impact of the adoption with a cumulative-effect adjustment to the January 1, 2019, rather than the January 1, 2017, financial statements. This will eliminate the need to restate amounts presented prior to January 1, 2019.

We adopted the standard effective January 1, 2019, and we elected the optional transition method and the practical expedients permitted under the transition guidance within the standard. Accordingly, we accounted for our existing operating leases as operating leases under the new guidance, without reassessing (a) whether the contracts contain a lease under ASC Topic 842, (b) whether classification of the operating leases would be different in accordance with ASC Topic 842, or (c) whether the unamortized initial direct costs before transition adjustments (as of December 31, 2018) would have met the definition of initial direct costs in ASC Topic 842 at lease commencement.

The standard had a material impact on our condensed consolidated balance sheets, but did not have an impact on our condensed consolidated statements of comprehensive (loss) income or cash flows from operations. The cumulative effect of the changes on our retained earnings was $22 thousand associated with capital gain. The most significant impact was the recognition of right-of-use (ROU) assets and lease liabilities for operating leases. Our accounting for finance leases remained substantially unchanged. See Note D, Leases for further discussion.