Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its wholly 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.
Accounting Policies and Accounting Standards Updates	Accounting Policies and Accounting Standards Updates In February 2013, the Financial Accounting Standards Board ("FASB") issued "Comprehensive Income: Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income," which requires entities to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under GAAP that provide additional detail on these amounts. This standard is effective prospectively for reporting periods beginning after December 15, 2012. The Company adopted this standard in the quarter ended March 31, 2013, which did not have a material impact on its consolidated financial statements. In December 2011 and February 2013, the FASB issued an amendment to the Balance Sheet topic of the Accounting Standards Codification ("ASC"), which requires entities to disclose both gross and net information about both derivatives and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting agreement. The objective of the disclosure is to facilitate comparison between those entities that prepare their financial statements on the basis of GAAP and those entities that prepare their financial statements on the basis of International Financial Reporting Standards. This standard is effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013. Retrospective presentation for all comparative periods presented is required. Accordingly, the Company will adopt this amendment in the first quarter of fiscal year 2014. The Company does not believe that the adoption of this guidance will have a material impact on its consolidated financial statements. Other than as noted above, there have been no changes in the Company's significant accounting policies for the three months ended March 31, 2013 as compared to the significant accounting policies described in the Form 10-K.
Concentrations and Uncertainties	Concentrations and Uncertainties The Company maintains cash balances at various financial institutions, and such balances commonly exceed the $250,000 insured amount by the Federal Deposit Insurance Corporation. The Company has not experienced any losses in such accounts, and management believes that the Company is not exposed to any significant credit risk with respect to such cash and cash equivalents. Financial instruments, which subject the Company to potential concentrations of credit risk, consist principally of the Company’s billed and unbilled accounts receivable. The Company’s accounts receivable result from sales to customers within the federal government, state and local agencies and commercial customers in various industries. The Company performs ongoing credit evaluations of its commercial customers. Credit is extended based on evaluation of the customer’s financial condition, and collateral is not required. Accounts receivable are recorded at the invoiced amount and do not bear interest. See Note 11 for a discussion of the Company’s significant customers. The Company has 10% Senior Secured Notes due 2017 ("the Notes") with an aggregate principal amount of $625.0 million outstanding as of March 31, 2013. The Notes are due on June 1, 2017, and the Company pays interest at the rate of 10% per annum semi-annually, in arrears, on June 1 and December 1 of each year. In addition, the Company has $91.7 million available under its existing revolving credit agreement. See Note 9 for a complete description of the Company’s debt. The Company intends to fund its cash requirements with cash on hand, cash flows from operating activities and borrowings under its existing revolving credit facility. Management believes these sources of liquidity should be sufficient to meet the Company’s cash needs for at least the next 12 months. The Company’s quarterly and annual operating results have fluctuated in the past and may vary in the future due to a variety of factors, many of which are external to the Company's control. If the conditions in its industry deteriorate, its customers cancel or postpone projects, its customers experience significant cost constraints as a result of federal budget cuts or sequestration or if the Company is unable to sufficiently increase its revenues or reduce its expenses, the Company may experience, in the future, a significant long-term negative impact to its financial results and cash flows from operations. In such a situation, the Company could fall out of compliance with its financial and other covenants which, if not waived, could limit its liquidity and capital resources.
Goodwill and intangible assets	Goodwill The Company performs its annual impairment test for goodwill in accordance with ASC Topic 350, Intangibles-Goodwill and Other (“Topic 350”) as of the last day of each fiscal year or when evidence of potential impairment exists. The Company assesses goodwill for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment, referred to as a component. The Company determines its reporting units by first identifying its operating segments, and then assessing whether any components of these segments constitute a business for which discrete financial information is available and where segment management regularly reviews the operating results of that component. The Company aggregates components within an operating segment that have similar economic characteristics. For the annual and, if necessary, interim impairment assessment, the Company identified its reporting units to be its KGS and PSS operating segments. In order to test for potential impairment, the Company estimates the fair value of each of its reporting units based on a comparison and weighting of the income approach, specifically the discounted cash flow method and the market approach, which estimates the fair value of the Company's reporting units based upon comparable market prices and recent transactions and also validates the reasonableness of the implied multiples from the income approach. The Company reconciles the fair value of its reporting units to its market capitalization by calculating its market capitalization based upon an average of its stock price prior to and subsequent to the date the Company performs its analysis and assuming a control premium. The Company uses these methodologies to determine the fair value of its reporting units for comparison to their corresponding book values because there are no observable inputs available, a Level 3 measurement. If the book value exceeds the estimated fair value for a reporting unit a potential impairment is indicated, and Topic 350 prescribes the approach for determining the impairment amount, if any.
Inventoried costs	Inventoried Costs Inventoried costs are stated at the lower of cost or market. Cost is determined using the average cost or first-in, first-out method and is applied consistently within an operating entity. Inventoried costs primarily relate to work in process under fixed-price contracts using costs as the basis of the percentage-of-completion calculation under the units produced method of revenue recognition. These costs represent accumulated contract costs less the portion of such costs allocated to delivered items. Accumulated contract costs include direct production costs, factory and engineering overhead and production tooling costs. Pursuant to contract provisions of U.S. Government contracts, such customers may have title to, or a security interest in, inventories related to such contracts as a result of advances, performance-based payments or progress payments. The Company reflects those advances and payments as an offset against the related inventory balances. The Company regularly reviews inventory quantities on hand, future purchase commitments with its suppliers, and the estimated utility of its inventory. If the Company’s review indicates a reduction in utility below carrying value, it reduces its inventory to a new cost basis.
Earnings per share	Net Income (Loss) Per Common Share The Company calculates net income (loss) per share in accordance with 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.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries for which all inter-company transactions have been eliminated in consolidation.

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.

Accounting Policies and Accounting Standards Updates

In February 2013, the Financial Accounting Standards Board ("FASB") issued "Comprehensive Income: Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income," which requires entities to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under GAAP that provide additional detail on these amounts. This standard is effective prospectively for reporting periods beginning after December 15, 2012. The Company adopted this standard in the quarter ended March 31, 2013, which did not have a material impact on its consolidated financial statements.

In December 2011 and February 2013, the FASB issued an amendment to the Balance Sheet topic of the Accounting Standards Codification ("ASC"), which requires entities to disclose both gross and net information about both derivatives and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting agreement. The objective of the disclosure is to facilitate comparison between those entities that prepare their financial statements on the basis of GAAP and those entities that prepare their financial statements on the basis of International Financial Reporting Standards. This standard is effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013. Retrospective presentation for all comparative periods presented is required. Accordingly, the Company will adopt this amendment in the first quarter of fiscal year 2014. The Company does not believe that the adoption of this guidance will have a material impact on its consolidated financial statements.

Other than as noted above, there have been no changes in the Company's significant accounting policies for the three months ended March 31, 2013 as compared to the significant accounting policies described in the Form 10-K.

Concentrations and Uncertainties

The Company maintains cash balances at various financial institutions, and such balances commonly exceed the $250,000 insured amount by the Federal Deposit Insurance Corporation. The Company has not experienced any losses in such accounts, and management believes that the Company is not exposed to any significant credit risk with respect to such cash and cash equivalents.

Financial instruments, which subject the Company to potential concentrations of credit risk, consist principally of the Company’s billed and unbilled accounts receivable. The Company’s accounts receivable result from sales to customers within the federal government, state and local agencies and commercial customers in various industries. The Company performs ongoing credit evaluations of its commercial customers. Credit is extended based on evaluation of the customer’s financial condition, and collateral is not required. Accounts receivable are recorded at the invoiced amount and do not bear interest. See Note 11 for a discussion of the Company’s significant customers.

The Company has 10% Senior Secured Notes due 2017 ("the Notes") with an aggregate principal amount of $625.0 million outstanding as of March 31, 2013. The Notes are due on June 1, 2017, and the Company pays interest at the rate of 10% per annum semi-annually, in arrears, on June 1 and December 1 of each year. In addition, the Company has $91.7 million available under its existing revolving credit agreement. See Note 9 for a complete description of the Company’s debt.

The Company intends to fund its cash requirements with cash on hand, cash flows from operating activities and borrowings under its existing revolving credit facility. Management believes these sources of liquidity should be sufficient to meet the Company’s cash needs for at least the next 12 months. The Company’s quarterly and annual operating results have fluctuated in the past and may vary in the future due to a variety of factors, many of which are external to the Company's control. If the conditions in its industry deteriorate, its customers cancel or postpone projects, its customers experience significant cost constraints as a result of federal budget cuts or sequestration or if the Company is unable to sufficiently increase its revenues or reduce its expenses, the Company may experience, in the future, a significant long-term negative impact to its financial results and cash flows from operations. In such a situation, the Company could fall out of compliance with its financial and other covenants which, if not waived, could limit its liquidity and capital resources.

Goodwill and intangible assets

Goodwill

The Company performs its annual impairment test for goodwill in accordance with ASC Topic 350, Intangibles-Goodwill and Other (“Topic 350”) as of the last day of each fiscal year or when evidence of potential impairment exists.

The Company assesses goodwill for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment, referred to as a component. The Company determines its reporting units by first identifying its operating segments, and then assessing whether any components of these segments constitute a business for which discrete financial information is available and where segment management regularly reviews the operating results of that component. The Company aggregates components within an operating segment that have similar economic characteristics. For the annual and, if necessary, interim impairment assessment, the Company identified its reporting units to be its KGS and PSS operating segments.

In order to test for potential impairment, the Company estimates the fair value of each of its reporting units based on a comparison and weighting of the income approach, specifically the discounted cash flow method and the market approach, which estimates the fair value of the Company's reporting units based upon comparable market prices and recent transactions and also validates the reasonableness of the implied multiples from the income approach. The Company reconciles the fair value of its reporting units to its market capitalization by calculating its market capitalization based upon an average of its stock price prior to and subsequent to the date the Company performs its analysis and assuming a control premium. The Company uses these methodologies to determine the fair value of its reporting units for comparison to their corresponding book values because there are no observable inputs available, a Level 3 measurement. If the book value exceeds the estimated fair value for a reporting unit a potential impairment is indicated, and Topic 350 prescribes the approach for determining the impairment amount, if any.

Inventoried costs

Inventoried Costs

Inventoried costs are stated at the lower of cost or market. Cost is determined using the average cost or first-in, first-out method and is applied consistently within an operating entity. Inventoried costs primarily relate to work in process under fixed-price contracts using costs as the basis of the percentage-of-completion calculation under the units produced method of revenue recognition. These costs represent accumulated contract costs less the portion of such costs allocated to delivered items. Accumulated contract costs include direct production costs, factory and engineering overhead and production tooling costs. Pursuant to contract provisions of U.S. Government contracts, such customers may have title to, or a security interest in, inventories related to such contracts as a result of advances, performance-based payments or progress payments. The Company reflects those advances and payments as an offset against the related inventory balances.

The Company regularly reviews inventory quantities on hand, future purchase commitments with its suppliers, and the estimated utility of its inventory. If the Company’s review indicates a reduction in utility below carrying value, it reduces its inventory to a new cost basis.

Earnings per share

Net Income (Loss) Per Common Share

The Company calculates net income (loss) per share in accordance with 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.

- Definition

Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.

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- Definition

Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.

+ References+ Details

- Definition

Disclosure of accounting policy for determining an entity's fiscal year or other fiscal period. This disclosure may include identification of the fiscal period end-date, the length of the fiscal period, any reporting period lag between the entity and its subsidiaries, or equity investees. If a reporting lag exists, the closing date of the entity having a different period end is generally noted, along with an explanation of the necessity for using different closing dates. Any intervening events that materially affect the entity's financial position or results of operations are generally also disclosed.

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- Definition

Disclosure of accounting policy for major classes of inventories, bases of stating inventories (for example, lower of cost or market), methods by which amounts are added and removed from inventory classes (for example, FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this disclosure includes the nature of the cost elements included in inventory.

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