Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020
Cash Flows from Operating Activities
Net Income	$ 15,118	$ 13,020
Net Cash Provided by Operating Activities:
Depreciation and amortization	13,908	14,663
Non-cash operating lease cost	1,563	1,554
Stock-based compensation expense	5,742	4,529
Deferred income taxes	1,002	2,087
Recovery of credit losses	(74)	(3)
Other	357	388
Changes in Assets and Liabilities:
Accounts receivable	(8,646)	(382)
Contract assets	(18,910)	(16,207)
Inventories	(15,381)	(16,127)
Production cost of contracts	(1,558)	1,014
Other assets	(1,147)	1,139
Accounts payable	3,475	(14,063)
Contract liabilities	(6,394)	12,565
Operating lease liabilities	(1,566)	(1,391)
Accrued and other liabilities	(5,307)	(6,176)
Net Cash Used in Operating Activities	(17,818)	(3,390)
Cash Flows from Investing Activities
Purchases of property and equipment	(7,367)	(5,002)
Proceeds from sale of assets	531	0
Post closing cash received from the acquisition of Nobles Worldwide, Inc., net	0	190
Net Cash Used in Investing Activities	(6,836)	(4,812)
Cash Flows from Financing Activities
Borrowings from senior secured revolving credit facility	20,000	65,900
Repayments of senior secured revolving credit facility	(30,000)	(15,900)
Repayments of term loans	(4,426)	(9,112)
Repayments of other debt	(170)	(160)
Net cash paid upon issuance of common stock under stock plans	(5,214)	(1,282)
Net Cash (Used in) Provided by Financing Activities	(19,810)	39,446
Net (Decrease) Increase in Cash and Cash Equivalents	(44,464)	31,244
Cash and Cash Equivalents at Beginning of Period	56,466	39,584
Cash and Cash Equivalents at End of Period	$ 12,002	$ 70,828