Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 7,114	$ 7,432
Accounts receivable, net of allowance for doubtful accounts of $518 and $495 at April 1, 2017 and December 31, 2016, respectively	71,623	76,239
Inventories	127,201	119,896
Production cost of contracts	11,052	11,340
Other current assets	10,589	11,034
Total Current Assets	227,579	225,941
Property and equipment, net of accumulated depreciation of $138,799 and $135,484 at April 1, 2017 and December 31, 2016, respectively	104,868	101,590
Goodwill	82,554	82,554
Intangibles, net	99,364	101,573
Non-current deferred income taxes	286	286
Other assets	3,320	3,485
Total Assets	517,971	515,429
Current Liabilities
Current portion of long-term debt	0	3
Accounts payable	63,313	57,024
Accrued liabilities	28,092	29,279
Total Current Liabilities	91,405	86,306
Long-term debt, less current portion	162,156	166,896
Non-current deferred income taxes	31,949	31,417
Other long-term liabilities	18,179	18,707
Total Liabilities	303,689	303,326
Commitments and contingencies (Notes 11, 13)
Shareholders’ Equity
Common stock - $0.01 par value; 35,000,000 shares authorized; 11,269,350 and 11,193,813 issued at April 1, 2017 and December 31, 2016, respectively	113	112
Additional paid-in capital	76,827	76,783
Retained earnings	143,402	141,287
Accumulated other comprehensive loss	(6,060)	(6,079)
Total Shareholders’ Equity	214,282	212,103
Total Liabilities and Shareholders’ Equity	$ 517,971	$ 515,429