Accounting Standards Issued and Not Yet Implemented	9 Months Ended
Sep. 23, 2016
Accounting Changes and Error Corrections [Abstract]
Accounting Standards Issued and Not Yet Implemented	4. Accounting Standards Issued and Not Yet Implemented In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows — Classification of Certain Cash Receipts and Cash Payments, which provides guidance regarding cash flow statement classification of: (1) debt prepayment or debt extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions, and (8) separately identifiable cash flows and application of the predominance principle. The new standard will be effective for the Company for interim and annual reporting periods beginning on January 1, 2018, with early adoption permitted. The adoption of this standard will not have an impact on the Company’s financial position or results of operations, however, the Company expects that there may be an immaterial reclassification of items within the operating, investing and financing activities on its statement of cash flows. The Company plans to early adopt this standard in the fourth quarter of 2016. 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 transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that the Company may elect to apply. The Company is currently evaluating the expected impact of the adoption of this standard on its consolidated financial statements and related disclosures. 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, provide companies with a single revenue recognition model for recognizing revenue from contracts with customers and significantly expand 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, with early application permitted beginning on January 1, 2017. 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 has made progress toward completing its evaluation of the potential changes from adopting this new standard on its financial reporting and disclosures. The Company has evaluated the impact of the standard on all of its revenue streams and most of its contracts. The Company expects to complete the contract evaluations and validate the results by the first quarter of 2017. The Company has also made significant progress on drafting its accounting policies and evaluating the new disclosure requirements. The Company expects to complete the evaluation of the impact of the accounting and disclosure changes on its business processes, controls and systems during the first half of 2017, design any changes to such business processes, controls and systems by the middle of 2017, and implement the changes over the remainder of 2017. Under the new standard, an entity recognizes revenue when or as it satisfies a performance obligation by transferring a good or service to the customer, either at a point in time or over time. The Company expects to recognize revenue over time on most of its contracts that are covered by contract accounting standards using cost inputs to measure progress toward completion of its performance obligations, which is similar to the POC cost-to-cost method currently used on certain of these contracts. The Company currently recognizes sales on fixed-priced production contracts that are covered by contract accounting standards, and under which units are produced and delivered in a continuous or sequential process as units are delivered, based on their contractual selling prices (units-of-delivery method). The Company expects to discontinue the use of the units-of-delivery method under the new standard. Approximately 50% of the Company’s net sales are generated from revenue arrangements accounted for under contract accounting standards, including approximately 15% that use the units-of-delivery method. While the Company is currently evaluating the expected impact of the adoption of this standard on its consolidated financial statements, related disclosures and the transition alternatives available, the Company will adopt the standard as of January 1, 2018. Furthermore, the Company expects to determine the transition method and the effect of this standard on the Company’s consolidated financial statements in the first quarter of 2017. Other accounting standard updates effective for interim and annual periods beginning after December 31, 2016 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 August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows — Classification of Certain Cash Receipts and Cash Payments, which provides guidance regarding cash flow statement classification of: (1) debt prepayment or debt extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions, and (8) separately identifiable cash flows and application of the predominance principle. The new standard will be effective for the Company for interim and annual reporting periods beginning on January 1, 2018, with early adoption permitted. The adoption of this standard will not have an impact on the Company’s financial position or results of operations, however, the Company expects that there may be an immaterial reclassification of items within the operating, investing and financing activities on its statement of cash flows. The Company plans to early adopt this standard in the fourth quarter of 2016.

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 transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that the Company may elect to apply. The Company is currently evaluating the expected impact of the adoption of this standard on its consolidated financial statements and related disclosures.

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, provide companies with a single revenue recognition model for recognizing revenue from contracts with customers and significantly expand 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, with early application permitted beginning on January 1, 2017. 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 has made progress toward completing its evaluation of the potential changes from adopting this new standard on its financial reporting and disclosures. The Company has evaluated the impact of the standard on all of its revenue streams and most of its contracts. The Company expects to complete the contract evaluations and validate the results by the first quarter of 2017. The Company has also made significant progress on drafting its accounting policies and evaluating the new disclosure requirements. The Company expects to complete the evaluation of the impact of the accounting and disclosure changes on its business processes, controls and systems during the first half of 2017, design any changes to such business processes, controls and systems by the middle of 2017, and implement the changes over the remainder of 2017.

Under the new standard, an entity recognizes revenue when or as it satisfies a performance obligation by transferring a good or service to the customer, either at a point in time or over time. The Company expects to recognize revenue over time on most of its contracts that are covered by contract accounting standards using cost inputs to measure progress toward completion of its performance obligations, which is similar to the POC cost-to-cost method currently used on certain of these contracts. The Company currently recognizes sales on fixed-priced production contracts that are covered by contract accounting standards, and under which units are produced and delivered in a continuous or sequential process as units are delivered, based on their contractual selling prices (units-of-delivery method). The Company expects to discontinue the use of the units-of-delivery method under the new standard. Approximately 50% of the Company’s net sales are generated from revenue arrangements accounted for under contract accounting standards, including approximately 15% that use the units-of-delivery method. While the Company is currently evaluating the expected impact of the adoption of this standard on its consolidated financial statements, related disclosures and the transition alternatives available, the Company will adopt the standard as of January 1, 2018. Furthermore, the Company expects to determine the transition method and the effect of this standard on the Company’s consolidated financial statements in the first quarter of 2017.

Other accounting standard updates effective for interim and annual periods beginning after December 31, 2016 are not expected to have an impact on the Company’s financial position, results of operations or cash flows.