Basis of Presentation	3 Months Ended
Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	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 for interim financial reporting and the instructions to Form 10-Q and, therefore, reflect all adjustments which are, in the opinion of management, necessary for a fair statement of the results for the interim periods presented. All such adjustments are of a normal recurring nature. These interim condensed consolidated financial statements should be read in conjunction with the Consolidated Financial Statements and Notes to Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. Recent Accounting Pronouncements - Not Yet Adopted Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In March 2017, the Financial Accounting Standard Board (“FASB”) issued amended guidance to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. The amended guidance requires the disaggregation of the service cost component from the other components of net periodic benefit costs and present it with other current compensation costs for related employees in the income statement, and present the other components elsewhere in the income statement and outside of income from operations if that subtotal is presented. This amended guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted. The Company does not expect the adoption of the amended guidance to have a material impact on its consolidated statements of operations and related disclosures. Restricted Cash In November 2016, the FASB issued amended guidance to address diversity in the classification and presentation of changes in restricted cash on the statement of cash flows. The amended guidance requires restricted cash and restricted cash equivalents to be classified in the statements of cash flows as cash and cash equivalents. This amended guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years, using a retrospective transition method. Early adoption is permitted. The Company does not expect the adoption of the amended guidance to have a material impact on its consolidated statements of cash flows. Income Taxes on Intra-Entity Transfers of Assets In October 2016, the FASB issued amended guidance related to the recognition of income taxes resulting from intra-entity transfers of assets other than inventory. The guidance requires companies to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Income tax effects of intra-entity transfers of inventory will continue to be deferred until the inventory has been sold to a third party. This amended guidance is effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods, using a modified retrospective approach, with the cumulative effect recognized through retained earnings at the date of adoption. Early adoption is permitted. The Company does not expect the adoption of the amended guidance to have a material impact on its consolidated financial statements and related disclosures. Cash Flow Simplification In August 2016, the FASB issued amended guidance that clarifies how companies present and classify certain cash receipts and cash payments in the statement of cash flows. The amended guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. Upon adoption, entities must apply the guidance retrospectively to all periods presented. The Company is currently evaluating the impact that the amended guidance will have on its consolidated statements of cash flows. Measurement of Credit Losses on Financial Instruments In June 2016, the FASB issued amended guidance that changes the impairment model for most financial assets and certain other instruments. For trade and other receivables, held-to-maturity debt securities, loans and other instruments, entities will be required to use a new forward-looking “expected loss” model that will replace today’s “incurred loss” model and generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to current practice, except that the losses will be recognized as an allowance. This amended guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption for the fiscal year beginning after December 15, 2018 is permitted. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first effective reporting period. The Company does not expect that the amended guidance will have a material effect on its consolidated financial statements and related disclosures. Leases In February 2016, the FASB issued amended guidance on accounting for leases. The amended guidance requires the recognition of a right-of-use asset and a lease liability for all leases by lessees with the exception of short-term leases and amends disclosure requirements associated with leasing arrangements. The new standard is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2018 using a modified retrospective transition approach. Early adoption is permitted. The Company is currently evaluating when to adopt the new standard, and the impact that the amended guidance will have on its consolidated financial statements and related disclosures. Revenue Recognition In May 2014, the FASB issued new accounting guidance related to revenue recognition. This new standard will replace all current U.S. GAAP guidance on this topic and eliminate all current industry-specific guidance. The new revenue recognition standard provides a unified model to determine when and how revenue is recognized. The core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB agreed to a one-year deferral of the effective date; the new standard is now effective for reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption of the new revenue standard is permitted; however, entities reporting under U.S. GAAP are not permitted to adopt the standard earlier than the original effective date, which was for years beginning after December 15, 2016. The new standard can be applied either retrospectively to each prior period presented or retrospectively with a cumulative-effect adjustment as of the date of initial application. The Company developed a project plan and established a cross-functional implementation team consisting of representatives from across all of its business segments. The project plan includes analyzing the impact of the standard on its contract portfolio by reviewing its current accounting policies and practices to identify potential differences that would result from applying the requirements of the new standard to its revenue contracts. The Company has made significant progress on its contract reviews and continues to evaluate the impact of the adoption of this standard on its consolidated financial statements, related disclosures and transition method. While the Company anticipates potentially increased over time revenue recognition for certain revenue contracts, the Company does not believe the standard will have a material effect on its consolidated financial statements. The Company expects to adopt the standard as of January 1, 2018. Recent Accounting Pronouncements - Adopted Balance Sheet Classification of Deferred Taxes In November 2015, the FASB issued amended guidance to simplify the presentation of deferred income taxes. The amendments require deferred tax liabilities and assets to be classified as noncurrent. The amended guidance is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company adopted this guidance on a prospective basis in the first quarter of 2017. Prior periods in its consolidated financial statements were not retrospectively adjusted. Inventory In July 2015, the FASB issued amended guidance, which changes the measurement principle for inventory from the lower of cost or market to the lower of cost and net realizable value. The guidance defines net realizable value as estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The new guidance must be applied on a prospective basis and is effective for fiscal years beginning after December 15, 2016, and interim periods within those years. The Company adopted the guidance in the first quarter of 2017. The adoption of the guidance did not have a material impact on its consolidated financial statements. Share-Based Payments In March 2016, the FASB issued amended guidance related to employee share-based payment accounting. The amended guidance simplifies several aspects related to the accounting for share-based payment transactions, including the accounting for income taxes, statutory tax withholding requirements, forfeitures and classification on the statement of cash flows. This amended guidance is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. The Company elected to early adopt this guidance in the fourth quarter of 2016. The primary impact of adoption was the recognition of excess tax benefits in its provision for income taxes, rather than paid-in capital, of $0.4 million for the year ended December 31, 2016. Cash flows related to excess tax benefits for share-based payments are now included in the consolidated statements of cash flows as net operating activities rather than net financing activities. The changes have been applied prospectively and prior periods have not been adjusted. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented on the consolidated statement of cash flows since such cash flows have historically been presented as a financing activity. Furthermore, the Company elected to continue to estimate expected forfeitures of employee equity awards to determine the amount of compensation expense to be recognized in each period.

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 for interim financial reporting and the instructions to Form 10-Q and, therefore, reflect all adjustments which are, in the opinion of management, necessary for a fair statement of the results for the interim periods presented. All such adjustments are of a normal recurring nature. These interim condensed consolidated financial statements should be read in conjunction with the Consolidated Financial Statements and Notes to Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.

Recent Accounting Pronouncements - Not Yet Adopted

Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost

In March 2017, the Financial Accounting Standard Board (“FASB”) issued amended guidance to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. The amended guidance requires the disaggregation of the service cost component from the other components of net periodic benefit costs and present it with other current compensation costs for related employees in the income statement, and present the other components elsewhere in the income statement and outside of income from operations if that subtotal is presented. This amended guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted. The Company does not expect the adoption of the amended guidance to have a material impact on its consolidated statements of operations and related disclosures.

Restricted Cash

In November 2016, the FASB issued amended guidance to address diversity in the classification and presentation of changes in restricted cash on the statement of cash flows. The amended guidance requires restricted cash and restricted cash equivalents to be classified in the statements of cash flows as cash and cash equivalents. This amended guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years, using a retrospective transition method. Early adoption is permitted. The Company does not expect the adoption of the amended guidance to have a material impact on its consolidated statements of cash flows.

Income Taxes on Intra-Entity Transfers of Assets

In October 2016, the FASB issued amended guidance related to the recognition of income taxes resulting from intra-entity transfers of assets other than inventory. The guidance requires companies to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Income tax effects of intra-entity transfers of inventory will continue to be deferred until the inventory has been sold to a third party. This amended guidance is effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods, using a modified retrospective approach, with the cumulative effect recognized through retained earnings at the date of adoption. Early adoption is permitted. The Company does not expect the adoption of the amended guidance to have a material impact on its consolidated financial statements and related disclosures.

Cash Flow Simplification

In August 2016, the FASB issued amended guidance that clarifies how companies present and classify certain cash receipts and cash payments in the statement of cash flows. The amended guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. Upon adoption, entities must apply the guidance retrospectively to all periods presented. The Company is currently evaluating the impact that the amended guidance will have on its consolidated statements of cash flows.

Measurement of Credit Losses on Financial Instruments

In June 2016, the FASB issued amended guidance that changes the impairment model for most financial assets and certain other instruments. For trade and other receivables, held-to-maturity debt securities, loans and other instruments, entities will be required to use a new forward-looking “expected loss” model that will replace today’s “incurred loss” model and generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to current practice, except that the losses will be recognized as an allowance. This amended guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption for the fiscal year beginning after December 15, 2018 is permitted. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first effective reporting period. The Company does not expect that the amended guidance will have a material effect on its consolidated financial statements and related disclosures.

Leases

In February 2016, the FASB issued amended guidance on accounting for leases. The amended guidance requires the recognition of a right-of-use asset and a lease liability for all leases by lessees with the exception of short-term leases and amends disclosure requirements associated with leasing arrangements. The new standard is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2018 using a modified retrospective transition approach. Early adoption is permitted. The Company is currently evaluating when to adopt the new standard, and the impact that the amended guidance will have on its consolidated financial statements and related disclosures.

Revenue Recognition

In May 2014, the FASB issued new accounting guidance related to revenue recognition. This new standard will replace all current U.S. GAAP guidance on this topic and eliminate all current industry-specific guidance. The new revenue recognition standard provides a unified model to determine when and how revenue is recognized. The core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB agreed to a one-year deferral of the effective date; the new standard is now effective for reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption of the new revenue standard is permitted; however, entities reporting under U.S. GAAP are not permitted to adopt the standard earlier than the original effective date, which was for years beginning after December 15, 2016. The new standard can be applied either retrospectively to each prior period presented or retrospectively with a cumulative-effect adjustment as of the date of initial application.

The Company developed a project plan and established a cross-functional implementation team consisting of representatives from across all of its business segments. The project plan includes analyzing the impact of the standard on its contract portfolio by reviewing its current accounting policies and practices to identify potential differences that would result from applying the requirements of the new standard to its revenue contracts. The Company has made significant progress on its contract reviews and continues to evaluate the impact of the adoption of this standard on its consolidated financial statements, related disclosures and transition method. While the Company anticipates potentially increased over time revenue recognition for certain revenue contracts, the Company does not believe the standard will have a material effect on its consolidated financial statements. The Company expects to adopt the standard as of January 1, 2018.

Recent Accounting Pronouncements - Adopted

Balance Sheet Classification of Deferred Taxes

In November 2015, the FASB issued amended guidance to simplify the presentation of deferred income taxes. The amendments require deferred tax liabilities and assets to be classified as noncurrent. The amended guidance is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company adopted this guidance on a prospective basis in the first quarter of 2017. Prior periods in its consolidated financial statements were not retrospectively adjusted.

Inventory

In July 2015, the FASB issued amended guidance, which changes the measurement principle for inventory from the lower of cost or market to the lower of cost and net realizable value. The guidance defines net realizable value as estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The new guidance must be applied on a prospective basis and is effective for fiscal years beginning after December 15, 2016, and interim periods within those years. The Company adopted the guidance in the first quarter of 2017. The adoption of the guidance did not have a material impact on its consolidated financial statements.

Share-Based Payments

In March 2016, the FASB issued amended guidance related to employee share-based payment accounting. The amended guidance simplifies several aspects related to the accounting for share-based payment transactions, including the accounting for income taxes, statutory tax withholding requirements, forfeitures and classification on the statement of cash flows. This amended guidance is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. The Company elected to early adopt this guidance in the fourth quarter of 2016. The primary impact of adoption was the recognition of excess tax benefits in its provision for income taxes, rather than paid-in capital, of $0.4 million for the year ended December 31, 2016. Cash flows related to excess tax benefits for share-based payments are now included in the consolidated statements of cash flows as net operating activities rather than net financing activities. The changes have been applied prospectively and prior periods have not been adjusted. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented on the consolidated statement of cash flows since such cash flows have historically been presented as a financing activity. Furthermore, the Company elected to continue to estimate expected forfeitures of employee equity awards to determine the amount of compensation expense to be recognized in each period.