Accounting Standards Update	12 Months Ended
Dec. 31, 2018
Accounting Changes and Error Corrections [Abstract]
Accounting Standards Update	Accounting Standards Update Recently Adopted Accounting Pronouncements Effective January 1, 2018, the Company adopted Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606), using the modified retrospective method. This update outlined a comprehensive new revenue recognition model designed to depict the transfer of promised 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. The new standard also required additional quantitative and qualitative disclosures (see Note 10 – Revenues). Accounting Pronouncements Not Yet Adopted Effective January 1, 2019, the Company adopted ASU 2016-02 Leases (Topic 842), which requires lessees to recognize most operating leases on the balance sheet as a right of use asset and lease liability, using the transition relief and will present the effects of this standard prospectively. The Company will recognize and measure the right of use asset and lease liability from operating leases on the consolidated balance sheet without revising comparative period information or disclosures. The Company elected the package of practical expedients which allowed the Company to forgo the reassessment of (i) whether contracts are or contain leases, (ii) classification of leases and (iii) initial direct costs of existing leases. The Company also elected the practical expedient to not separate non-lease components. At the transition date, the estimated right of use asset and lease liability are approximately $95.0 and $100.0 million, respectively. The difference between the right of use asset and lease liability is due to the derecognition of deferred rent and prepaid rent. The adoption of the standard did not have an effect on the Company’s stockholders' equity and is not expected to have an effect on the Company’s results of operations and cash flows. The adoption of the new standard will result in additional disclosures, including information on variable lease costs and short-term lease costs. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350) Simplifying the Test for Goodwill Impairment. The new guidance eliminates Step 2 of the goodwill impairment test which requires companies to calculate the implied fair value of goodwill, determined in the same manner as the amount of goodwill recognized in a business combination and using a hypothetical purchase price allocation. Under the new guidance, goodwill impairment will now be measured as the amount by which a reporting unit’s carrying amount exceeds its fair value. The Company is required to adopt this standard on January 1, 2020, and early adoption is permitted. The Company does not expect the adoption of this guidance will have a material impact on its consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements on fair value measurements. The amendments in this update are effective for interim and annual periods for the Company beginning on January 1, 2020, with early adoption permitted. The Company is evaluating the effects that the adoption of this guidance will have on its disclosures. In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The amendments in this update align 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. The amendments in this update are effective for interim and annual periods for the Company beginning on January 1, 2020, with early adoption permitted. The amendments in this update may be applied either retrospectively or prospectively. The Company is in the process of evaluating the impact the standard will have on its consolidated financial statements. In November 2018, the FASB issued ASU No. 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606. The amendments in this update provide guidance on how to assess whether certain transactions between collaborative arrangement participants should be accounted for within the revenue recognition standard. The amendments in this update are effective for interim and annual periods for the Company beginning on January 1, 2020, with early adoption permitted. The Company is in the process of evaluating the impact the standard will have on its consolidated financial statements. In August 2018, the SEC adopted the final rule under SEC Release No. 33-10532, Disclosure Update and Simplification, amending certain disclosure requirements that were redundant, duplicative, overlapping, outdated or superseded. In addition, the amendments expanded the disclosure requirements on the analysis of stockholders' equity for interim financial statements. Under the amendments, an analysis of changes in each caption of stockholders' equity presented in the balance sheet at interim reporting periods must be provided in a note or separate statement. The analysis should present a reconciliation of the beginning balance to the ending balance of each period for which a statement of comprehensive income is presented. The Company plans to include this presentation of interim changes in stockholders' equity in its Quarterly Report on Form 10-Q for the quarter ending March 31, 2019.

Accounting Standards Update

Recently Adopted Accounting Pronouncements

Effective January 1, 2018, the Company adopted Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606), using the modified retrospective method. This update outlined a comprehensive new revenue recognition model designed to depict the transfer of promised 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. The new standard also required additional quantitative and qualitative disclosures (see Note 10 – Revenues).

Accounting Pronouncements Not Yet Adopted

Effective January 1, 2019, the Company adopted ASU 2016-02 Leases (Topic 842), which requires lessees to recognize most operating leases on the balance sheet as a right of use asset and lease liability, using the transition relief and will present the effects of this standard prospectively. The Company will recognize and measure the right of use asset and lease liability from operating leases on the consolidated balance sheet without revising comparative period information or disclosures. The Company elected the package of practical expedients which allowed the Company to forgo the reassessment of (i) whether contracts are or contain leases, (ii) classification of leases and (iii) initial direct costs of existing leases. The Company also elected the practical expedient to not separate non-lease components. At the transition date, the estimated right of use asset and lease liability are approximately $95.0 and $100.0 million, respectively. The difference between the right of use asset and lease liability is due to the derecognition of deferred rent and prepaid rent. The adoption of the standard did not have an effect on the Company’s stockholders' equity and is not expected to have an effect on the Company’s results of operations and cash flows. The adoption of the new standard will result in additional disclosures, including information on variable lease costs and short-term lease costs.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350) Simplifying the Test for Goodwill Impairment. The new guidance eliminates Step 2 of the goodwill impairment test which requires companies to calculate the implied fair value of goodwill, determined in the same manner as the amount of goodwill recognized in a business combination and using a hypothetical purchase price allocation. Under the new guidance, goodwill impairment will now be measured as the amount by which a reporting unit’s carrying amount exceeds its fair value. The Company is required to adopt this standard on January 1, 2020, and early adoption is permitted. The Company does not expect the adoption of this guidance will have a material impact on its consolidated financial statements.

In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements on fair value measurements. The amendments in this update are effective for interim and annual periods for the Company beginning on January 1, 2020, with early adoption permitted. The Company is evaluating the effects that the adoption of this guidance will have on its disclosures.

In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s

Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The amendments in this update align 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. The amendments in this update are effective for interim and annual periods for the Company beginning on January 1, 2020, with early adoption permitted. The amendments in this update may be applied either retrospectively or prospectively. The Company is in the process of evaluating the impact the standard will have on its consolidated financial statements.

In November 2018, the FASB issued ASU No. 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606. The amendments in this update provide guidance on how to assess whether certain transactions between collaborative arrangement participants should be accounted for within the revenue recognition standard. The amendments in this update are effective for interim and annual periods for the Company beginning on January 1, 2020, with early adoption permitted. The Company is in the process of evaluating the impact the standard will have on its consolidated financial statements.

In August 2018, the SEC adopted the final rule under SEC Release No. 33-10532, Disclosure Update and Simplification, amending certain disclosure requirements that were redundant, duplicative, overlapping, outdated or superseded. In addition, the amendments expanded the disclosure requirements on the analysis of stockholders' equity for interim financial statements. Under the amendments, an analysis of changes in each caption of stockholders' equity presented in the balance sheet at interim reporting periods must be provided in a note or separate statement. The analysis should present a reconciliation of the beginning balance to the ending balance of each period for which a statement of comprehensive income is presented. The Company plans to include this presentation of interim changes in stockholders' equity in its Quarterly Report on Form 10-Q for the quarter ending March 31, 2019.