Basis of Presentation and Significant Accounting Policies	3 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, these financial statements contain all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the Company’s financial condition and results of operations. Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission. The Company’s significant accounting policies, which have been consistently applied, are summarized in its 2018 Annual Report on Form 10-K. New Accounting Standards Implemented In July 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2018-09, Codification Improvements. On January 1, 2019, the Company adopted this standard. This standard which does not prescribe any new accounting guidance, makes minor improvements and clarifications of several different FASB Accounting Standards Codification ("ASC") areas based on comments and suggestions made by various stakeholders. The adoption of this standard did not have a material impact on the Company's condensed consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The standard provides financial statement preparers with the option to reclassify tax effects within other comprehensive income (referred to as stranded tax effects) to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. On January 1, 2019, the Company adopted this standard. The adoption of this standard did not have a material impact on the Company's condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) ("ASU 2016-02"). The standard replaces current codification Topic 840 - Leases with updated guidance on accounting for leases that requires a lessee to recognize assets and liabilities arising from an operating lease on the balance sheet, whereas previous guidance did not require lease assets and liabilities to be recognized for most operating leases. Furthermore, this standard permits companies to make an accounting policy election to not recognize lease assets and liabilities on the balance sheet for leases with a term of 12 months or less. For both finance leases and operating leases, the lease liability should be initially measured at the present value of the future lease payments. In addition to recognizing the lease liability, companies are required to recognize a corresponding asset representing the right to use the underlying asset over the lease term. The right of use asset ("ROU") is initially measured as the value of the lease liability, plus indirect costs and prepaid lease payments, less lease incentives. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842 (Leases), which provides narrow amendments to clarify how to apply certain aspects of ASU 2016-02, allowing entities the option to instead apply the provisions of the new lease standards at the effective date without adjusting comparative periods presented. The Company elected this optional transition method along with the package of practical expedients permitted under the guidance which resulted in not having to reassess whether expired or existing contracts upon adoption contained a lease as well as retaining the historical classifications of the Company's leases and initial direct costs. The Company also elected the hindsight practical expedient in evaluating lessee options and to combine lease and non-lease components in calculating the lease liability and ROU asset for operating leases. The adoption of this standard resulted in the recording of a ROU asset of $20.5 million and lease liability of $28.6 million on January 1, 2019 which represented a non-cash investing activity in the Company's condensed consolidated statements of cash flows. See Note 8 for further discussion. New Accounting Standards Not Yet Implemented In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other- Internal-Use Software (Subtopic 350-40) ("ASU 2018-15"). This standard aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software, including an internal use software license. ASU 2018-15 is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company does not expect the adoption of this standard will have a material impact on the Company's condensed consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820). This standard modifies the disclosure requirements on fair value measurements and is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the potential impact of the guidance but does not expect the adoption of this standard will have a material impact on the Company's condensed consolidated financial statements.

Basis of Presentation and Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, these financial statements contain all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the Company’s financial condition and results of operations. Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019.

These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission. The Company’s significant accounting policies, which have been consistently applied, are summarized in its 2018 Annual Report on Form 10-K.

New Accounting Standards Implemented

In July 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2018-09, Codification Improvements. On January 1, 2019, the Company adopted this standard. This standard which does not prescribe any new accounting guidance, makes minor improvements and clarifications of several different FASB Accounting Standards Codification ("ASC") areas based on comments and suggestions made by various stakeholders. The adoption of this standard did not have a material impact on the Company's condensed consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The standard provides financial statement preparers with the option to reclassify tax effects within other comprehensive income (referred to as stranded tax effects) to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. On January 1, 2019, the Company adopted this standard. The adoption of this standard did not have a material impact on the Company's condensed consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) ("ASU 2016-02"). The standard replaces current codification Topic 840 - Leases with updated guidance on accounting for leases that requires a lessee to recognize assets and liabilities arising from an operating lease on the balance sheet, whereas previous guidance did not require lease assets and liabilities to be recognized for most operating leases. Furthermore, this standard permits companies to make an accounting policy election to not recognize lease assets and liabilities on the balance sheet for leases with a term of 12 months or less. For both finance leases and operating leases, the lease liability should be initially measured at the present value of the future lease payments. In addition to recognizing the lease liability, companies are required to recognize a corresponding asset representing the right to use the underlying asset over the lease term. The right of use asset ("ROU") is initially measured as the value of the lease liability, plus indirect costs and prepaid lease payments, less lease incentives. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842 (Leases), which provides narrow amendments to clarify how to apply certain aspects of ASU 2016-02, allowing entities the option to instead apply the provisions of the new lease standards at the effective date without adjusting comparative periods presented. The Company elected this optional transition method along with the package of practical expedients permitted under the guidance which resulted in not having to reassess whether expired or existing contracts upon adoption contained a lease as well as retaining the historical classifications of the Company's leases and initial direct costs. The Company also elected the hindsight practical expedient in evaluating lessee options and to combine lease and non-lease components in calculating the lease liability and ROU asset for operating leases. The adoption of this standard resulted in the recording of a ROU asset of $20.5 million and lease liability of $28.6 million on January 1, 2019 which represented a non-cash investing activity in the Company's condensed consolidated statements of cash flows. See Note 8 for further discussion.

New Accounting Standards Not Yet Implemented

In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other- Internal-Use Software (Subtopic 350-40) ("ASU 2018-15"). This standard aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software, including an internal use software license. ASU 2018-15 is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company does not expect the adoption of this standard will have a material impact on the Company's condensed consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820). This standard modifies the disclosure requirements on fair value measurements and is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the potential impact of the guidance but does not expect the adoption of this standard will have a material impact on the Company's condensed consolidated financial statements.