Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Net Cash (Used in) Provided by Operating Activities:
Net Income	$ 4,629	$ 3,707
Adjustments to Reconcile Net Income to Net Cash Provided by (Used in) Operating Activities
Depreciation and amortization	7,426	7,033
Stock-based compensation expense	364	693
Deferred income taxes	(919)	(2,040)
Recovery of doubtful accounts	(62)	(157)
Other	88	246
Changes in Assets and Liabilities:
Accounts receivable	(8,599)	1,066
Inventories	(8,388)	(1,084)
Production cost of contracts	513	(2,559)
Other assets	5,440	1,456
Accounts payable	(4,138)	(2,097)
Accrued and other liabilities	(6,067)	(12,386)
Net Cash Used in Operating Activities	(9,713)	(6,122)
Cash Flows from Investing Activities
Purchases of property and equipment	(2,192)	(2,612)
Proceeds from sale of assets	5	5
Net Cash Used in Investing Activities	(2,187)	(2,607)
Cash Flows from Financing Activities
Repayment of term loan and other debt	(7,506)	(7,506)
Debt issue cost paid	0	(181)
Net proceeds from issuance of common stock under stock plans	7	(127)
Net Cash Used in Financing Activities	(7,499)	(7,814)
Net Decrease in Cash and Cash Equivalents	(19,399)	(16,543)
Cash and Cash Equivalents at Beginning of Period	48,814	46,537
Cash and Cash Equivalents at End of Period	29,415	29,994
Supplemental Disclosures of Cash Flow Information
Interest paid	11,397	12,037
Taxes paid	58	563
Non-cash activities:
Purchases of property and equipment not paid	$ 182	$ 0