Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
Cash Flows from Operating Activities
Net Income	$ 13,723	$ 13,847
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Depreciation and amortization	21,829	21,375
Stock-based compensation expense	2,520	1,711
Deferred income taxes	1,775	45
Recovery of doubtful accounts	(214)	(141)
Other	649	1,434
Changes in Assets and Liabilities:
Accounts receivable	(12,273)	4,804
Inventories	(4,961)	(206)
Production cost of contracts	(1,408)	(3,396)
Other assets	7,121	(9,033)
Accounts payable	(2,447)	(2,910)
Accrued and other liabilities	(5,400)	(12,819)
Net Cash Provided by Operating Activities	20,914	14,711
Cash Flows from Investing Activities
Purchases of property and equipment	(9,329)	(7,321)
Proceeds from sale of assets	83	123
Insurance recoveries related to property and equipment	1,600	0
Net Cash Used in Investing Activities	(7,646)	(7,198)
Cash Flows from Financing Activities
Repayment of term loan and other debt	(22,519)	(22,518)
Debt issue cost paid	0	(181)
Net proceeds from issuance of common stock under stock plans	1,289	1,246
Net Cash Used in Financing Activities	(21,230)	(21,453)
Net Decrease in Cash and Cash Equivalents	(7,962)	(13,940)
Cash and Cash Equivalents at Beginning of Period	48,814	46,537
Cash and Cash Equivalents at End of Period	40,852	32,597
Supplemental Disclosures of Cash Flow Information
Interest paid	24,090	25,640
Taxes paid	3,410	6,542
Non-cash activities:
Purchases of property and equipment not paid	$ 418	$ 0