Accounting Standards Issued and Not Yet Implemented	6 Months Ended
Jun. 30, 2017
Accounting Standards Issued and Not Yet Implemented [Abstract]
Accounting Standards Issued and Not Yet Implemented	4. Accounting Standards Issued and Not Yet Implemented In March 2017, the FASB issued ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. Under current U.S. GAAP, defined benefit pension and postretirement benefit cost (net benefit cost) comprise several components that reflect different aspects of the Company’s financial arrangements as well as the cost of benefits provided to employees. Those components are aggregated for reporting in the financial statements, and current U.S. GAAP presents those costs within the operating section of the income statement or capitalized into assets when appropriate. The amendments in this update require the Company to report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented separately from the service cost component and below income from operations. The amendments in this update also allow only the service cost component to be eligible for capitalization when applicable. The amendments in this update will be effective for the Company for interim and annual periods beginning January 1, 2018. Upon adoption, the amendments in this update will be applied retrospectively for the presentation of the components of net benefit cost, and prospectively for the capitalization of the service cost component of net benefit cost. The adoption of this standard will not impact pre-tax income or earnings per share reported under current GAAP for the years ended December 31, 2017 and 2016 and is not expected to materially impact pre-tax income or earnings per share for the year ended December 31, 2018. In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business, with the objective of providing additional guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendments in this update provide new guidance to determine when an integrated set of assets and activities (collectively referred to as a “set”) is not a business. The new guidance requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. The new guidance reduces the number of transactions that need to be further evaluated. The new standard, as amended, will be effective for the Company prospectively for interim and annual reporting periods beginning on January 1, 2018, with early application permitted. The Company believes that the evaluation of whether transactions should be accounted for as acquisitions (or dispositions) of assets or businesses will be simplified under the new standard. In February 2016, the FASB issued ASU 2016-02, Leases, which updates the existing guidance on accounting for leases and requires new qualitative and quantitative disclosures about the Company’s leasing activities. The new standard requires the Company to recognize lease assets and lease liabilities on the balance sheet for all leases under which the Company is the lessee, including those classified as operating leases under previous accounting guidance. The new standard allows the Company to make an accounting policy election not to recognize on the balance sheet lease assets and liabilities for leases with a term of 12 months or less. The accounting applied by a lessor is largely unchanged from previous guidance. The new standard, as amended, will be effective for the Company for interim and annual reporting periods beginning on January 1, 2019, with early adoption permitted. In the adoption year, the Company will be required to recognize and measure all leases using a modified retrospective approach, which requires the restatement of each prior reporting period presented, and permits a number of optional practical expedients that the Company may elect to apply. The optional practical expedients allow the Company to use: (i) its existing assessments under current accounting standards as to the classification of a lease as operating or financing, and whether any expired or existing contracts is or contains a lease, and (ii) hindsight to determine the term of existing leases, for the purpose of restating each prior reporting period presented. The Company is currently evaluating when it will adopt this ASU, whether to elect the optional practical expedients and the expected impact of the adoption of this standard on its consolidated financial statements and disclosures related to leasing activities. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which will replace numerous requirements in U.S. GAAP, including industry-specific requirements, provides companies with a single revenue recognition model for recognizing revenue from contracts with customers and significantly expands the disclosure requirements for revenue arrangements. The new standard, as amended, will be effective for the Company for interim and annual reporting periods beginning on January 1, 2018. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application with disclosure of results under the new and old standards for the first year of adoption. The Company will adopt the standard as of January 1, 2018, using the modified retrospective transition method, and is currently evaluating the expected impact of the adoption on its consolidated financial statements and related disclosures. Under the modified retrospective transition method, the Company will be required to calculate and record the cumulative effect of adopting the new standard as of January 1, 2018, in the Company’s Quarterly Report on Form 10-Q for the first quarter of 2018. The Company expects to estimate the cumulative effect of adopting the new standard as of January 1, 2018 in the second half of 2017 based on expected contracts in process at December 31, 2017. The Company has made progress toward completing its evaluation of the potential changes from adopting this new standard on its financial reporting and disclosures. Specifically, the Company has evaluated the impact of the standard on its various revenue streams. Based on progress made to date, the Company expects to recognize revenue over time on most of its contracts that are covered by current contract accounting standards by using cost inputs to measure progress toward the completion of its performance obligations, which is similar to the POC cost-to-cost method currently used on the majority of these contracts. Accordingly, the Company expects the adoption of this standard to primarily impact certain contracts currently covered by contract accounting standards that recognize revenue using the POC units-of-delivery method. Approximately 20% of the Company’s net sales used the POC units-of-delivery method to recognize revenue in 2016. Upon adoption, the Company expects to recognize revenue earlier in the performance period as costs are incurred, as opposed to when units are delivered, on some of these contracts that currently use the POC units-of-delivery method to recognize revenue. Additionally, the Company has also made progress on drafting its accounting policies affected by this standard, the redesign of internal controls over financial reporting related to the standard, as well as evaluating the expanded disclosure requirements. The Company has substantially completed the evaluation of the impact of the accounting and disclosure changes on its business processes, controls and systems, and will implement changes to such business processes, controls and systems over the remainder of 2017. Other accounting standard updates effective for interim and annual periods beginning after December 31, 2017 are not expected to have an impact on the Company’s financial position, results of operations or cash flows.

4. Accounting Standards Issued and Not Yet Implemented

In March 2017, the FASB issued ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. Under current U.S. GAAP, defined benefit pension and postretirement benefit cost (net benefit cost) comprise several components that reflect different aspects of the Company’s financial arrangements as well as the cost of benefits provided to employees. Those components are aggregated for reporting in the financial statements, and current U.S. GAAP presents those costs within the operating section of the income statement or capitalized into assets when appropriate. The amendments in this update require the Company to report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented separately from the service cost component and below income from operations. The amendments in this update also allow only the service cost component to be eligible for capitalization when applicable. The amendments in this update will be effective for the Company for interim and annual periods beginning January 1, 2018. Upon adoption, the amendments in this update will be applied retrospectively for the presentation of the components of net benefit cost, and prospectively for the capitalization of the service cost component of net benefit cost. The adoption of this standard will not impact pre-tax income or earnings per share reported under current GAAP for the years ended December 31, 2017 and 2016 and is not expected to materially impact pre-tax income or earnings per share for the year ended December 31, 2018.

In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business, with the objective of providing additional guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendments in this update provide new guidance to determine when an integrated set of assets and activities (collectively referred to as a “set”) is not a business. The new guidance requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. The new guidance reduces the number of transactions that need to be further evaluated. The new standard, as amended, will be effective for the Company prospectively for interim and annual reporting periods beginning on January 1, 2018, with early application permitted. The Company believes that the evaluation of whether transactions should be accounted for as acquisitions (or dispositions) of assets or businesses will be simplified under the new standard.

In February 2016, the FASB issued ASU 2016-02, Leases, which updates the existing guidance on accounting for leases and requires new qualitative and quantitative disclosures about the Company’s leasing activities. The new standard requires the Company to recognize lease assets and lease liabilities on the balance sheet for all leases under which the Company is the lessee, including those classified as operating leases under previous accounting guidance. The new standard allows the Company to make an accounting policy election not to recognize on the balance sheet lease assets and liabilities for leases with a term of 12 months or less. The accounting applied by a lessor is largely unchanged from previous guidance. The new standard, as amended, will be effective for the Company for interim and annual reporting periods beginning on January 1, 2019, with early adoption permitted. In the adoption year, the Company will be required to recognize and measure all leases using a modified retrospective approach, which requires the restatement of each prior reporting period presented, and permits a number of optional practical expedients that the Company may elect to apply. The optional practical expedients allow the Company to use: (i) its existing assessments under current accounting standards as to the classification of a lease as operating or financing, and whether any expired or existing contracts is or contains a lease, and (ii) hindsight to determine the term of existing leases, for the purpose of restating each prior reporting period presented. The Company is currently evaluating when it will adopt this ASU, whether to elect the optional practical expedients and the expected impact of the adoption of this standard on its consolidated financial statements and disclosures related to leasing activities.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which will replace numerous requirements in U.S. GAAP, including industry-specific requirements, provides companies with a single revenue recognition model for recognizing revenue from contracts with customers and significantly expands the disclosure requirements for revenue arrangements. The new standard, as amended, will be effective for the Company for interim and annual reporting periods beginning on January 1, 2018. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application with disclosure of results under the new and old standards for the first year of adoption.

The Company will adopt the standard as of January 1, 2018, using the modified retrospective transition method, and is currently evaluating the expected impact of the adoption on its consolidated financial statements and related disclosures. Under the modified retrospective transition method, the Company will be required to calculate and record the cumulative effect of adopting the new standard as of January 1, 2018, in the Company’s Quarterly Report on Form 10-Q for the first quarter of 2018. The Company expects to estimate the cumulative effect of adopting the new standard as of January 1, 2018 in the second half of 2017 based on expected contracts in process at December 31, 2017.

The Company has made progress toward completing its evaluation of the potential changes from adopting this new standard on its financial reporting and disclosures. Specifically, the Company has evaluated the impact of the standard on its various revenue streams. Based on progress made to date, the Company expects to recognize revenue over time on most of its contracts that are covered by current contract accounting standards by using cost inputs to measure progress toward the completion of its performance obligations, which is similar to the POC cost-to-cost method currently used on the majority of these contracts. Accordingly, the Company expects the adoption of this standard to primarily impact certain contracts currently covered by contract accounting standards that recognize revenue using the POC units-of-delivery method. Approximately 20% of the Company’s net sales used the POC units-of-delivery method to recognize revenue in 2016. Upon adoption, the Company expects to recognize revenue earlier in the performance period as costs are incurred, as opposed to when units are delivered, on some of these contracts that currently use the POC units-of-delivery method to recognize revenue.

Additionally, the Company has also made progress on drafting its accounting policies affected by this standard, the redesign of internal controls over financial reporting related to the standard, as well as evaluating the expanded disclosure requirements. The Company has substantially completed the evaluation of the impact of the accounting and disclosure changes on its business processes, controls and systems, and will implement changes to such business processes, controls and systems over the remainder of 2017.

Other accounting standard updates effective for interim and annual periods beginning after December 31, 2017 are not expected to have an impact on the Company’s financial position, results of operations or cash flows.