Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 29,415	$ 48,814
Accounts receivable, net of allowance for doubtful accounts of $427 and $489 at March 29, 2014 and December 31, 2013, respectively	100,570	91,909
Inventories	148,895	140,507
Production cost of contracts	10,479	11,599
Deferred income taxes	13,836	10,850
Other current assets	21,664	27,085
Total Current Assets	324,859	330,764
Property and Equipment, Net	94,168	96,090
Goodwill	161,940	161,940
Intangibles, Net	162,875	165,465
Other Assets	9,320	9,940
Total Assets	753,162	764,199
Current Liabilities
Current portion of long-term debt	25	25
Accounts payable	53,973	58,111
Accrued liabilities	39,628	45,453
Total Current Liabilities	93,626	103,589
Long-Term Debt, Less Current Portion	325,171	332,677
Deferred Income Taxes	70,556	68,489
Other Long-Term Liabilities	18,922	19,750
Total Liabilities	508,275	524,505
Commitments and Contingencies (Notes 8, 10)
Shareholders’ Equity
Common stock - $0.01 par value; 35,000,000 shares authorized; 10,999,632 and 10,960,054 issued at March 29, 2014 and December 31, 2013, respectively	110	110
Treasury stock, at cost - held in treasury 143,300 shares at March 29, 2014 and December 31, 2013	(1,924)	(1,924)
Additional paid-in capital	71,037	70,542
Retained earnings	179,457	174,828
Accumulated other comprehensive loss	(3,793)	(3,862)
Total Shareholders’ Equity	244,887	239,694
Total Liabilities and Shareholders’ Equity	$ 753,162	$ 764,199