New and Recently Adopted Accounting Pronouncements (Policies)	3 Months Ended
Mar. 31, 2018
Accounting Changes And Error Corrections [Abstract]
New and Recently Adopted Accounting Pronouncements	On December 31, 2017, the beginning of our 2018 fiscal year, we adopted ASU No. 2014-09, Revenue from Contracts with Customers, which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. Topic 606 is based on the principle that an entity should recognize revenue to depict the transfer of 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. Topic 606 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cashflows arising from customer contracts, including significant judgements and changes in judgements and assets recognized from costs incurred to fulfill a contract. We adopted the standard on December 31, 2017 using the modified retrospective transaction method and the adoption did not have a material effect on our financial position, results of operations and internal controls over financial reporting. See Note 6 for additional information on revenue recognition. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments – Overall , which relates to the recognition and measurement of financial assets and liabilities. The new guidance makes targeted improvements to GAAP impacting equity investments (other than those accounted for under the equity method or consolidated), financial liabilities accounted for under the fair value election, and presentation and disclosure requirements for financial instruments, among other changes. The new guidance is effective for annual periods beginning after December 15, 2017, with early adoption prohibited other than for certain provisions. Adoption of this ASU did not have a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases , which replaces existing lease guidance. The ASU is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. The new guidance will continue to classify leases as either finance or operating, with classification affecting the pattern of expense recognition in the statement of operations. The new guidance is effective for annual periods beginning after December 15, 2018, with early application permitted. The new standard is required to be applied with a modified retrospective approach. We are evaluating the effect that the new guidance will have on our consolidated financial statements and related disclosures. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments , which clarifies and provides guidance on eight cash flow classification issues and is intended to reduce existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. Adoption of this ASU did not have a material impact on our consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment, which eliminates the need to perform a hypothetical purchase price allocation to measure goodwill impairment. ASU 2017-04 is effective for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. We are evaluating the effect that the new guidance will have, however, we do not believe the new guidance will have a material impact on our consolidated financial statements and related disclosures.

On December 31, 2017, the beginning of our 2018 fiscal year, we adopted ASU No. 2014-09, Revenue from Contracts with Customers, which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. Topic 606 is based on the principle that an entity should recognize revenue to depict the transfer of 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. Topic 606 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cashflows arising from customer contracts, including significant judgements and changes in judgements and assets recognized from costs incurred to fulfill a contract. We adopted the standard on December 31, 2017 using the modified retrospective transaction method and the adoption did not have a material effect on our financial position, results of operations and internal controls over financial reporting. See Note 6 for additional information on revenue recognition.

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments – Overall , which relates to the recognition and measurement of financial assets and liabilities. The new guidance makes targeted improvements to GAAP impacting equity investments (other than those accounted for under the equity method or consolidated), financial liabilities accounted for under the fair value election, and presentation and disclosure requirements for financial instruments, among other changes. The new guidance is effective for annual periods beginning after December 15, 2017, with early adoption prohibited other than for certain provisions. Adoption of this ASU did not have a material impact on our consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases , which replaces existing lease guidance. The ASU is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. The new guidance will continue to classify leases as either finance or operating, with classification affecting the pattern of expense recognition in the statement of operations. The new guidance is effective for annual periods beginning after December 15, 2018, with early application permitted. The new standard is required to be applied with a modified retrospective approach. We are evaluating the effect that the new guidance will have on our consolidated financial statements and related disclosures.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments , which clarifies and provides guidance on eight cash flow classification issues and is intended to reduce existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. Adoption of this ASU did not have a material impact on our consolidated financial statements.

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment, which eliminates the need to perform a hypothetical purchase price allocation to measure goodwill impairment. ASU 2017-04 is effective for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. We are evaluating the effect that the new guidance will have, however, we do not believe the new guidance will have a material impact on our consolidated financial statements and related disclosures.