Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Cash Flows from Operating Activities
Net Income	$ 7,930	$ 7,472
Net Cash Provided by Operating Activities:
Depreciation and amortization	7,336	6,755
Non-cash operating lease cost	811	633
Stock-based compensation expense	2,279	1,464
Deferred income taxes	1,495	217
Allowance for credit losses	97	104
Inventory reserves	398	154
Other	194	(19)
Changes in Assets and Liabilities:
Accounts receivable	(14,591)	4,581
Contract assets	(10,543)	(6,641)
Inventories	(7,667)	(3,023)
Production cost of contracts	973	105
Other assets	871	(468)
Accounts payable	(4,711)	(1,789)
Contract liabilities	13,361	(2,115)
Operating lease liabilities	(700)	(627)
Accrued and other liabilities	(9,567)	(8,492)
Net Cash Used in Operating Activities	(12,034)	(1,689)
Cash Flows from Investing Activities
Purchases of property and equipment	(3,867)	(3,225)
Post closing cash received from the acquisition of Nobles Worldwide, Inc., net	190	0
Net Cash Used in Investing Activities	(3,677)	(3,225)
Cash Flows from Financing Activities
Borrowings from senior secured revolving credit facility	65,900	61,900
Repayments of senior secured revolving credit facility	(15,900)	(58,700)
Repayments of term loans	(7,362)	(3,000)
Repayments of other debt	(54)	(17)
Net cash paid upon issuance of common stock under stock plans	(858)	(1,805)
Net Cash Provided by (Used in) Financing Activities	41,726	(1,622)
Net Increase (Decrease) in Cash and Cash Equivalents	26,015	(6,536)
Cash and Cash Equivalents at Beginning of Period	39,584	10,263
Cash and Cash Equivalents at End of Period	$ 65,599	$ 3,727