Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Cash Flows from Operating Activities
Net Income (Loss)	$ 13,550	$ (1,973)
Adjustments to Reconcile Net (Loss) Income to Net Cash Provided by (Used in) Operating Activities
Depreciation and amortization	5,855	6,914
Gain on divestitures	(18,815)	0
Stock-based compensation expense	1,000	1,624
Deferred income taxes	(2,562)	751
Excess tax benefits from stock-based compensation	0	(109)
Recovery of doubtful accounts	(65)	(62)
Other	(1,370)	643
Changes in Assets and Liabilities:
Accounts receivable	1,972	210
Inventories	(12,366)	1,399
Production cost of contracts	429	95
Other assets	7,084	4,412
Accounts payable	7,303	342
Accrued and other liabilities	3,437	(10,761)
Net Cash Provided by Operating Activities	5,452	3,485
Cash Flows from Investing Activities
Purchases of property and equipment	(3,801)	(5,572)
Proceeds from sale of assets	0	9
Proceeds from divestitures	55,272	0
Net Cash Provided by (Used in) Investing Activities	51,471	(5,563)
Cash Flows from Financing Activities
Repayments of senior unsecured notes and term loans	(55,000)	(10,000)
Repayments of other debt	(7)	(6)
Excess tax benefits from stock-based compensation	0	109
Net proceeds from issuance of common stock under stock plans	(931)	(947)
Net Cash Used in Financing Activities	(55,938)	(10,844)
Net Increase (Decrease) in Cash and Cash Equivalents	985	(12,922)
Cash and Cash Equivalents at Beginning of Period	5,454	45,627
Cash and Cash Equivalents at End of Period	$ 6,439	$ 32,705