Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 01, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 7,372	$ 7,432
Accounts receivable, net of allowance for doubtful accounts of $536 and $495 at July 1, 2017 and December 31, 2016, respectively	81,965	76,239
Inventories	129,398	119,896
Production cost of contracts	12,673	11,340
Other current assets	10,438	11,034
Total Current Assets	241,846	225,941
Property and equipment, net of accumulated depreciation of $142,034 and $135,484 at July 1, 2017 and December 31, 2016, respectively	110,788	101,590
Goodwill	82,554	82,554
Intangibles, net	97,155	101,573
Non-current deferred income taxes	286	286
Other assets	3,143	3,485
Total Assets	535,772	515,429
Current Liabilities
Current portion of long-term debt	0	3
Accounts payable	71,659	57,024
Accrued liabilities	25,814	29,279
Total Current Liabilities	97,473	86,306
Long-term debt, less current portion	169,627	166,896
Non-current deferred income taxes	31,895	31,417
Other long-term liabilities	17,837	18,707
Total Liabilities	316,832	303,326
Commitments and contingencies (Notes 11, 13)
Shareholders’ Equity
Common stock - $0.01 par value; 35,000,000 shares authorized; 11,317,337 and 11,193,813 issued at July 1, 2017 and December 31, 2016, respectively	113	112
Additional paid-in capital	77,670	76,783
Retained earnings	147,225	141,287
Accumulated other comprehensive loss	(6,068)	(6,079)
Total Shareholders’ Equity	218,940	212,103
Total Liabilities and Shareholders’ Equity	$ 535,772	$ 515,429