Summary of Significant Accounting Policies (Policies)	9 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 25, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The information as of September 25, 2016 and for the three and nine months ended September 25, 2016 and September 27, 2015 is unaudited. The condensed consolidated balance sheet as of December 27, 2015 was derived from the Company’s audited consolidated financial statements at that date. In the opinion of management, these unaudited condensed consolidated financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the Company’s financial position, results of operations and cash flows for the interim periods presented. The results have been prepared in accordance with the instructions to Form 10-Q and do not necessarily include all information and footnotes necessary for presentation in accordance with accounting principles generally accepted in the U.S. (“GAAP”). These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the related notes included in the Company’s audited annual consolidated financial statements for the fiscal year ended December 27, 2015, included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 27, 2015, filed with the U.S. Securities and Exchange Commission on March 11, 2016 (the “Form 10-K”). Interim operating results are not necessarily indicative of operating results expected in subsequent periods or for the year as a whole. The Company classifies assets and liabilities as held for sale (“disposal group”) when management, having the authority to approve the action, commits to a plan to sell the disposal group, the sale is probable within one year, and the disposal group is available for immediate sale in its present condition. The Company also considers whether an active program to locate a buyer has been initiated, whether the disposal group is marketed actively for sale at a price that is reasonable in relation to its current fair value, and whether actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or the plan will be withdrawn. Assets held for sale in the Condensed Consolidated Balance Sheet consists of the Walterboro building facility, reported within the KGS segment with a carrying value of $1.9 million, which has been classified as held for sale due to the closure of the manufacturing facility in South Carolina. At the time of classifying the building as held for sale and at the end of each reporting period, the Company compares the carrying value of the building to estimates of fair value less costs to sell to assess for impairment utilizing the assistance of third-party broker opinions of value to assist in our fair value estimates; no impairment indicators were identified. Classification as held for sale began on the date that the Company met all of the criteria for classification as held for sale, and there are no other assets of liabilities that are associated with the facility. As discussed in Note 2 - Discontinued Operations, the amounts in these condensed consolidated financial statements reflect the August 21, 2015 disposition of the Company’s 100% owned subsidiary Herley Industries, Inc. (“Herley”) and certain of Herley’s subsidiaries, including Herley-CTI, Inc., EW Simulation Technology, Ltd. and Stapor Research, Inc. (collectively with Herley, the “Herley Entities”) as discontinued operations.
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its 100% owned subsidiaries for which all inter-company transactions have been eliminated in consolidation.
Fiscal Year	Fiscal Year The Company has a 52/53 week fiscal year ending on the last Sunday of the calendar year, with interim fiscal periods ending on the last Sunday of each calendar quarter. The three and nine month periods ended September 25, 2016 and September 27, 2015 consisted of 13-week periods. There are 52 calendar weeks in the fiscal years ending on December 25, 2016 and December 27, 2015.
Accounting Estimates	Accounting Estimates There have been no significant changes in the Company’s accounting estimates for the three and nine months ended September 25, 2016 as compared to the accounting estimates described in the Form 10-K.
Accounting Standards Updates	Accounting Standards Updates In August 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2016-15 (“ASU 2016-15”), Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The objective of ASU 2016-15 is to reduce existing diversity in practice by addressing eight specific cash flow issues related to how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. If early adopted, an entity must adopt all of the amendments in the same period. The Company is currently evaluating the impact of the adoption of ASU 2016-15 on the Company's financial statements. In May 2016, the FASB issued ASU 2016-12 (“ASU 2016-12”), Revenue from Contracts with Customers, Narrow-Scope Improvements and Practical Expedients. ASU 2016-12 clarifies the assessment of the collectability criterion, the presentation of sales taxes, the measurement of noncash consideration, the treatment of contract modifications at transition, and the treatment of completed contracts at transition. In April 2016, the FASB issued ASU 2016-10 (“ASU 2016-10”), Revenue from Contracts with Customers, Identifying Performance Obligations and Licensing. ASU 2016-10 provides additional guidance on identifying performance obligations and clarifies the implementation guidance on licensing. In March 2016, the FASB issued ASU 2016-08 (“ASU 2016-08”), Revenue from Contracts with Customers, Principal versus Agent Considerations. ASU 2016-08 clarifies the implementation guidance and illustrations in the new revenue standard. In August 2015, the FASB issued ASU 2015-14 (“ASU 2015-14”), Revenue from Contracts with Customers, Deferral of the Effective Date, that deferred the effective date of ASU 2014-09 (“ASU 2014-09”), Revenue from Contracts with Customers. Pursuant to ASU 2015-14, public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within those reporting periods. The FASB issued ASU 2014-09 in May 2014. ASU 2014-09 affects any entity using GAAP that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (e.g., insurance contracts or lease contracts). ASU 2014-09 will supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. ASU 2014-09 also supersedes some cost guidance included in FASB Accounting Standards Codification (“ASC”) Subtopic 605-35, Revenue Recognition—Construction-Type and Production-Type Contracts. The guidance permits companies to either apply the requirements retrospectively to all prior periods presented or apply the requirements in the year of adoption, through a cumulative adjustment. The Company has not yet selected a transition method nor has it determined the impact of adoption on its condensed consolidated financial statements. In March 2016, the FASB issued ASU 2016-09 (“ASU 2016-09”), Compensation — Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 simplifies several aspects of the accounting for employee share-based payments, including accounting for income taxes, forfeitures, statutory tax withholding requirements, and classification on the statement of cash flows. The amendments in this ASU are effective for annual periods beginning after December 15, 2016. Early adoption is permitted. The Company has not determined the impact of adoption on its condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02 (“ASU 2016-02”), Leases. ASU 2016-02 requires that lessees recognize assets and liabilities for the rights and obligations underlying leases with a lease term of more than one year. The amendments in this ASU are effective for annual periods ending after December 15, 2018. Early adoption is permitted. The standard must be applied using a modified retrospective approach. The Company has not determined the impact of adoption on its condensed consolidated financial statements. In January 2015, the FASB issued ASU 2015-01 (“ASU 2015-01”), Income Statement - Extraordinary and Unusual Items (Subtopic 225-20): Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items. ASU 2015-01 eliminates from GAAP the concept of extraordinary items. Subtopic 225-20, Income Statement - Extraordinary and Unusual Items, required that an entity separately classify, present, and disclose extraordinary events and transactions. Presently, an event or transaction is presumed to be an ordinary and usual activity of the reporting entity unless evidence clearly supports its classification as an extraordinary item. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. The Company adopted this standard in the quarter ended March 27, 2016, which did not have a material impact on its condensed consolidated financial statements. In August 2014, the FASB issued ASU 2014-15 (“ASU 2014-15”), Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. ASU 2014-15 is intended to define management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and to provide related footnote disclosures. Under GAAP, financial statements are prepared under the presumption that the reporting organization will continue to operate as a going concern, except in limited circumstances. Financial reporting under this presumption is commonly referred to as the going concern basis of accounting. The going concern basis of accounting is critical to financial reporting because it establishes the fundamental basis for measuring and classifying assets and liabilities. Currently, GAAP lacks guidance about management’s responsibility to evaluate whether there is substantial doubt about the organization’s ability to continue as a going concern or to provide related footnote disclosures. ASU 2014-15 provides guidance to an organization’s management, with principles and definitions that are intended to reduce diversity in the timing and content of disclosures that are commonly provided by organizations today in the financial statement footnotes. The amendments are effective for the first annual period ending after December 15, 2016, and for annual and interim periods thereafter. Early application is permitted for annual or interim reporting periods for which the financial statements have not previously been issued. The Company does not believe that the adoption of this guidance will have a material impact on its condensed consolidated financial statements. There have been no changes in the Company’s significant accounting policies, other than the adoption of ASU 2015-01, for the three and nine months ended September 25, 2016 as compared to the significant accounting policies described in the Form 10-K.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying amounts and the related estimated fair values of the Company’s long-term debt financial instruments not measured at fair value on a recurring basis at September 25, 2016 and December 27, 2015 are presented in Note 8 - Debt. The carrying value of all other financial instruments, including cash equivalents, accounts receivable, accounts payable, accrued expenses, billings in excess of cost and earnings on uncompleted contracts, income taxes payable and short-term debt, approximated their estimated fair values at September 25, 2016 and December 27, 2015 due to the short-term nature of these instruments.
Net Loss Per Common Share	Net Income (Loss) Per Common Share The Company calculates net income (loss) per share in accordance with FASB ASC Topic 260, Earnings per Share (“Topic 260”). Under Topic 260, basic net income (loss) per common share is calculated by dividing net income (loss) by the weighted-average number of common shares outstanding during the reporting period. Diluted net income (loss) per common share reflects the effects of potentially dilutive securities.