Recent accounting pronouncements	3 Months Ended
Mar. 31, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Description of New Accounting Pronouncements Not yet Adopted	Recent Accounting Pronouncements In March 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-09, Improvements to Employee Share-Based Payment Accounting, which amends Accounting Standards Codification (ASC) Topic 718, Compensation - Stock Compensation. This ASU simplifies several aspects of the accounting for share-based payment award transactions, including (i) income tax consequences, (ii) classification of awards as either equity or liabilities, (iii) whether or not to estimate forfeitures or account for them when they occur and (iv) classification on the statement of cash flows. The standard is effective for interim and annual periods beginning after December 31, 2016. The adoption of this guidance during the first quarter of 2017 did not have a material impact on the Company's consolidated financial position, results of operations or cash flows. In February 2016, the FASB issued ASU 2016-02, Leases, which amends ASC Topic 840, Leases, and is intended to increase the transparency and comparability of accounting for lease transactions. This ASU requires most leases to be recognized on the balance sheet. Lessees will need to recognize a right-of-use asset and a lease liability for virtually all leases. The liability will be equal to the present value of lease payments. The asset will be based on the liability, subject to adjustment, such as for initial direct costs. For income statement purposes, the FASB retained a dual model, requiring leases to be classified as either operating or finance. Lessor accounting remains similar to the current model. Targeted improvements were made to lessor accounting to align, where necessary, with certain changes to the lessee model and the new revenue recognition standard. The ASU will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. The standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted. The new standard must be adopted using a modified retrospective transition, and provides for certain practical expedients. Transition will require application of the new guidance at the beginning of the earliest comparative period presented. The Company is evaluating the impact of this standard on its consolidated financial statements and disclosures. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). ASU 2014-09 supersedes the revenue recognition requirements in Revenue Recognition (Topic 605), and requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The new revenue recognition standard also requires disclosures that sufficiently describe the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts. This ASU was amended by ASU No. 2015-14, issued in August 2015, which deferred the original effective date by one year; the effective date of this ASU is for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, using one of two retrospective application methods. In addition, the FASB issued other amendments during 2016 to FASB ASC Topic 606, Revenue from Contracts with Customers, that include implementation guidance to principal versus agent considerations, guidance to identifying performace obligations and licensing guidance and other narrow scope improvements. Early adoption is permitted only as of the annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company has developed an implementation plan to adopt this new guidance. As part of this plan, the Company is currently assessing the impact of these new standards on its business processes, business and accounting systems, and consolidated financial statements and related disclosures. The Company currently expects to complete its analysis, including implementing any necessary changes to existing business processes and systems to accommodate these new standards, by the third quarter of 2017. The Company will adopt this new guidance on January 1, 2018 using the modified retrospective application method. To date, the Company has not identified any material differences in its existing revenue recognition methods that would require modification under the new standards.

Recent Accounting Pronouncements

In March 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-09, Improvements to Employee Share-Based Payment Accounting, which amends Accounting Standards Codification (ASC) Topic 718, Compensation - Stock Compensation. This ASU simplifies several aspects of the accounting for share-based payment award transactions, including (i) income tax consequences, (ii) classification of awards as either equity or liabilities, (iii) whether or not to estimate forfeitures or account for them when they occur and (iv) classification on the statement of cash flows. The standard is effective for interim and annual periods beginning after December 31, 2016. The adoption of this guidance during the first quarter of 2017 did not have a material impact on the Company's consolidated financial position, results of operations or cash flows.

In February 2016, the FASB issued ASU 2016-02, Leases, which amends ASC Topic 840, Leases, and is intended to increase the transparency and comparability of accounting for lease transactions. This ASU requires most leases to be recognized on the balance sheet. Lessees will need to recognize a right-of-use asset and a lease liability for virtually all leases. The liability will be equal to the present value of lease payments. The asset will be based on the liability, subject to adjustment, such as for initial direct costs. For income statement purposes, the FASB retained a dual model, requiring leases to be classified as either operating or finance. Lessor accounting remains similar to the current model. Targeted improvements were made to lessor accounting to align, where necessary, with certain changes to the lessee model and the new revenue recognition standard. The ASU will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. The standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted. The new standard must be adopted using a modified retrospective transition, and provides for certain practical expedients. Transition will require application of the new guidance at the beginning of the earliest comparative period presented. The Company is evaluating the impact of this standard on its consolidated financial statements and disclosures.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). ASU 2014-09 supersedes the revenue recognition requirements in Revenue Recognition (Topic 605), and requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The new revenue recognition standard also requires disclosures that sufficiently describe the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts. This ASU was amended by ASU No. 2015-14, issued in August 2015, which deferred the original effective date by one year; the effective date of this ASU is for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, using one of two retrospective application methods. In addition, the FASB issued other amendments during 2016 to FASB ASC Topic 606, Revenue from Contracts with Customers, that include implementation guidance to principal versus agent considerations, guidance to identifying performace obligations and licensing guidance and other narrow scope improvements. Early adoption is permitted only as of the annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company has developed an implementation plan to adopt this new guidance. As part of this plan, the Company is currently assessing the impact of these new standards on its business processes, business and accounting systems, and consolidated financial statements and related disclosures. The Company currently expects to complete its analysis, including implementing any necessary changes to existing business processes and systems to accommodate these new standards, by the third quarter of 2017. The Company will adopt this new guidance on January 1, 2018 using the modified retrospective application method. To date, the Company has not identified any material differences in its existing revenue recognition methods that would require modification under the new standards.