Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies There have been no material changes to our significant accounting policies from those disclosed in our 2015 Form 10-K. Recently Issued Accounting Standards In February 2016, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update (ASU) 2016-02, Leases, which requires lessees to recognize the assets and liabilities on their balance sheet for the rights and obligations created by operating leases and will also require disclosures designed to give users of financial statements information on the amount, timing, and uncertainty of cash flows arising from leases. The guidance provided by ASU 2016-02 is effective for annual periods beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the effect of ASU 2016-06 on our consolidated financial statements and do not plan to early adopt this guidance. In May 2014, the FASB, issued ASU 2014-09, Revenue from Contracts with Customers, which provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under today’s guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price, and allocating the transaction price to each separate performance obligation. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, which defers the effective date of ASU 2014-09 for all entities for one year. Consequently, the guidance provided in ASU 2014-09 will be effective for us in the first quarter of our fiscal year ending December 31, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The guidance permits the use of either the retrospective or cumulative effect transition method. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations, which clarifies the implementation guidance on principal versus agent considerations. ASU 2016-08 is effective the same date as ASU 2014-09, Revenue from Contracts with Customers. In April 2016, the FASB issued ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which clarifies the guidance related to identifying performance obligations and licensing implementation guidance. ASU 2016-10 reduces the cost and complexity of applying certain aspects of the guidance both at implementation and on an ongoing basis. The effective date for ASU 2016-10 is the same as ASU 2014-09. We are currently in the process of evaluating the impact of the adoption of this guidance on our consolidated financial statements and have not yet selected a transition method. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting, which require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the effect of ASU 2016-09 on our consolidated financial statements and do not plan to early adopt this guidance.

Summary of Significant Accounting Policies

There have been no material changes to our significant accounting policies from those disclosed in our 2015 Form 10-K.

Recently Issued Accounting Standards

In February 2016, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update (ASU) 2016-02, Leases, which requires lessees to recognize the assets and liabilities on their balance sheet for the rights and obligations created by operating leases and will also require disclosures designed to give users of financial statements information on the amount, timing, and uncertainty of cash flows arising from leases. The guidance provided by ASU 2016-02 is effective for annual periods beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the effect of ASU 2016-06 on our consolidated financial statements and do not plan to early adopt this guidance.

In May 2014, the FASB, issued ASU 2014-09, Revenue from Contracts with Customers, which provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under today’s guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price, and allocating the transaction price to each separate performance obligation. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, which defers the effective date of ASU 2014-09 for all entities for one year. Consequently, the guidance provided in ASU 2014-09 will be effective for us in the first quarter of our fiscal year ending December 31, 2018. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The guidance permits the use of either the retrospective or cumulative effect transition method. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations, which clarifies the implementation guidance on principal versus agent considerations. ASU 2016-08 is effective the same date as ASU 2014-09, Revenue from Contracts with Customers. In April 2016, the FASB issued ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which clarifies the guidance related to identifying performance obligations and licensing implementation guidance. ASU 2016-10 reduces the cost and complexity of applying certain aspects of the guidance both at implementation and on an ongoing basis. The effective date for ASU 2016-10 is the same as ASU 2014-09. We are currently in the process of evaluating the impact of the adoption of this guidance on our consolidated financial statements and have not yet selected a transition method.

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting, which require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the effect of ASU 2016-09 on our consolidated financial statements and do not plan to early adopt this guidance.