Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 03, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents	$ 16,972	$ 56,466
Accounts receivable, net (allowance for credit losses of $1,570 and $1,552 at April 3, 2021 and December 31, 2020, respectively	61,124	58,025
Contract assets	173,909	154,028
Inventories	138,287	129,223
Production cost of contracts	7,198	6,971
Other current assets	5,723	5,571
Total Current Assets	403,213	410,284
Property and equipment, net of accumulated depreciation of $172,536 and $169,742 at April 3, 2021 and December 31, 2020, respectively	109,180	109,990
Operating Lease Right-of-Use Assets	15,703	16,348
Goodwill	170,830	170,830
Intangibles, Net	121,506	124,744
Deferred Income Taxes	33	33
Other Assets	5,399	5,118
Total Assets	825,864	837,347
Current Liabilities
Accounts payable	70,235	63,980
Contract liabilities	24,257	28,264
Accrued and other liabilities	28,433	40,526
Operating lease liabilities	3,118	3,132
Current portion of long-term debt	7,000	7,000
Total Current Liabilities	133,043	142,902
Long-Term Debt, Less Current Portion	304,344	311,922
Non-Current Operating Lease Liabilities	13,785	14,555
Deferred Income Taxes	17,598	16,992
Other Long-Term Liabilities	21,524	21,642
Total Liabilities	490,294	508,013
Commitments and Contingencies
Shareholders’ Equity
Common stock - $0.01 par value; 35,000,000 shares authorized; 11,849,597 and 11,728,212 shares issued and outstanding at April 3, 2021 and December 31, 2020, respectively	118	117
Additional paid-in capital	96,385	97,090
Retained earnings	248,422	241,727
Accumulated other comprehensive loss	(9,355)	(9,600)
Total Shareholders’ Equity	335,570	329,334
Total Liabilities and Shareholders’ Equity	$ 825,864	$ 837,347