New Accounting Standards	3 Months Ended
Mar. 31, 2018
Accounting Changes and Error Corrections [Abstract]
New Accounting Standards	New Accounting Standards Adopted Accounting Standards In May 2014, the Financial Accounting Standards Board ("FASB") issued ASU 2014-09, Revenue from Contracts with Customers. On January 1, 2018, we adopted ASC 606 using the modified retrospective method and recorded an immaterial cumulative effect adjustment to the beginning balance of retained earnings for revenue contracts which existed at the adoption date. Under the modified retrospective method, prior year information has not been adjusted and continues to be reported under the accounting standards in effect for periods prior to the adoption date. We have not retroactively restated the existing contracts for modifications that occurred before January 1, 2018. See Note 1, "Basis of Presentation and Significant Accounting Policies" in Part I, Item 1, of this Quarterly Report on Form 10-Q for a description of the significant accounting policies and methods used in preparation of the Condensed Consolidated Financial Statements. See Note 4, “Revenues” in Part I, Item 1, of this Quarterly Report on Form 10-Q for the disclosures required under ASC 606. The adoption of ASC 606 had an immaterial impact on our Condensed Consolidated Statements of Comprehensive Income and Condensed Consolidated Balance Sheets, and no impact on our Condensed Consolidated Statements of Cash Flows. In March 2018, the FASB issued ASU 2018-05, Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 (SEC Update), Income Taxes (Topic 740). ASU 2018-05 provides guidance regarding the recording of tax impacts where uncertainty exists, in the period of adoption of the 2017 U.S. Tax Cuts and Jobs Act (the “2017 Tax Act”). In accordance with this guidance, the Company’s financial results reflect provisional amounts for those specific income tax effects of the 2017 Tax Act for which the accounting under ASC Topic 740 is incomplete but a reasonable estimate could be determined. During the three months ended March 31, 2018, the Company did not recognize any changes to the provisional amounts recorded in our 2017 Annual Report on Form 10-K in connection with the 2017 Tax Act, as the Company continues to collect the information necessary to complete those calculations. The accounting for the tax effects of the 2017 Tax Act will be completed in the second half of 2018. Accounting Standards Not Yet Adopted In February 2016, the FASB issued ASU 2016-02, Leases ("ASC 842"), which supersedes existing lease guidance. Under ASC 842, we will be required to record right-of-use assets and corresponding lease liabilities on the balance sheet. Previously, there was no requirement to recognize an asset or liability on the balance sheet for an operating lease. ASC 842 also requires disclosure of key information about leasing arrangements. This guidance is effective beginning January 1, 2019. The new standard is required to be applied with a modified retrospective approach for each prior reporting period presented. We are in the preliminary phases of our implementation plan, which includes the identification of all lease contracts and an assessment of the effect of ASC 842 on our portfolio of leases. While this assessment continues, we have not yet determined the effect of ASC 842 on our Condensed Consolidated Balance Sheet. We do not expect that the adoption of ASC 842 will have a material impact on our results of operations or cash flow presentation.

New Accounting Standards

Adopted Accounting Standards

In May 2014, the Financial Accounting Standards Board ("FASB") issued ASU 2014-09, Revenue from Contracts with Customers. On January 1, 2018, we adopted ASC 606 using the modified retrospective method and recorded an immaterial cumulative effect adjustment to the beginning balance of retained earnings for revenue contracts which existed at the adoption date. Under the modified retrospective method, prior year information has not been adjusted and continues to be reported under the accounting standards in effect for periods prior to the adoption date. We have not retroactively restated the existing contracts for modifications that occurred before January 1, 2018.

See Note 1, "Basis of Presentation and Significant Accounting Policies" in Part I, Item 1, of this Quarterly Report on Form 10-Q for a description of the significant accounting policies and methods used in preparation of the Condensed Consolidated Financial Statements. See Note 4, “Revenues” in Part I, Item 1, of this Quarterly Report on Form 10-Q for the disclosures required under ASC 606. The adoption of ASC 606 had an immaterial impact on our Condensed Consolidated Statements of Comprehensive Income and Condensed Consolidated Balance Sheets, and no impact on our Condensed Consolidated Statements of Cash Flows.

In March 2018, the FASB issued ASU 2018-05, Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 (SEC Update), Income Taxes (Topic 740). ASU 2018-05 provides guidance regarding the recording of tax impacts where uncertainty exists, in the period of adoption of the 2017 U.S. Tax Cuts and Jobs Act (the “2017 Tax Act”). In accordance with this guidance, the Company’s financial results reflect provisional amounts for those specific income tax effects of the 2017 Tax Act for which the accounting under ASC Topic 740 is incomplete but a reasonable estimate could be determined. During the three months ended March 31, 2018, the Company did not recognize any changes to the provisional amounts recorded in our 2017 Annual Report on Form 10-K in connection with the 2017 Tax Act, as the Company continues to collect the information necessary to complete those calculations. The accounting for the tax effects of the 2017 Tax Act will be completed in the second half of 2018.

Accounting Standards Not Yet Adopted

In February 2016, the FASB issued ASU 2016-02, Leases ("ASC 842"), which supersedes existing lease guidance. Under ASC 842, we will be required to record right-of-use assets and corresponding lease liabilities on the balance sheet. Previously, there was no requirement to recognize an asset or liability on the balance sheet for an operating lease. ASC 842 also requires disclosure of key information about leasing arrangements. This guidance is effective beginning January 1, 2019. The new standard is required to be applied with a modified retrospective approach for each prior reporting period presented. We are in the preliminary phases of our implementation plan, which includes the identification of all lease contracts and an assessment of the effect of ASC 842 on our portfolio of leases. While this assessment continues, we have not yet determined the effect of ASC 842 on our Condensed Consolidated Balance Sheet. We do not expect that the adoption of ASC 842 will have a material impact on our results of operations or cash flow presentation.