Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015
Cash Flows from Operating Activities
Net Income (Loss)	$ 17,411	$ (191)
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided by Operating Activities
Depreciation and amortization	11,331	13,428
Gain on divestitures	(18,815)	0
Stock-based compensation expense	1,985	2,461
Deferred income taxes	(3,144)	1,577
Excess tax benefits from stock-based compensation	0	(509)
Recovery of doubtful accounts	(24)	(28)
Noncash loss on extinguishment of debt	0	2,842
Other	(3,401)	(1,663)
Changes in Assets and Liabilities:
Accounts receivable	2,738	(106)
Inventories	(12,875)	4,828
Production cost of contracts	792	1,348
Other assets	7,690	7,942
Accounts payable	9,871	(4,078)
Accrued and other liabilities	(1,484)	(10,295)
Net Cash Provided by Operating Activities	12,075	17,556
Cash Flows from Investing Activities
Purchases of property and equipment	(7,619)	(7,782)
Proceeds from sale of assets	0	279
Insurance recoveries related to property and equipment	0	1,510
Proceeds from divestitures	55,272	0
Net Cash Provided by (Used in) Investing Activities	47,653	(5,993)
Cash Flows from Financing Activities
Borrowings from senior secured revolving credit facility	9,200	65,000
Repayments of senior secured revolving credit facility	(4,200)	0
Repayments of senior unsecured notes and term loans	(60,000)	(90,000)
Repayments of other debt	(14)	(13)
Debt issuance costs	0	(4,738)
Excess tax benefits from stock-based compensation	0	509
Net proceeds from issuance of common stock under stock plans	(992)	(1,106)
Net Cash Used in Financing Activities	(56,006)	(30,348)
Net Increase (Decrease) in Cash and Cash Equivalents	3,722	(18,785)
Cash and Cash Equivalents at Beginning of Period	5,454	45,627
Cash and Cash Equivalents at End of Period	$ 9,176	$ 26,842