Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2021	Mar. 28, 2020
Cash Flows from Operating Activities:
Net income	$ 46	$ 1,101
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	82	96
Share-based compensation expense	45	15
Changes in current assets and liabilities:
Trade accounts receivable	(1,322)	655
Contract assets	2,768	(1,912)
Other current assets	(1,307)	165
Accounts payable	13	444
Accrued compensation and benefits	(876)	(408)
Contract liabilities	976	(1,801)
Income taxes payable	19	258
Other current liabilities, net	(167)	(97)
Net cash provided by (used in) operating activities	277	(1,484)
Cash Flows from Investing Activities:
Property and equipment acquired	(57)	(34)
Net cash used in investing activities	(57)	(34)
Cash Flows from Financing Activities:
Payments on finance leases	(36)	(20)
Interest on PPP loan	12	0
Proceeds from revolving credit facility	25	0
Net cash provided by (used in) financing activities	1	(20)
Net change in cash	221	(1,538)
Cash at beginning of period	13,706	8,307
Cash at end of period	13,927	6,769
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	58	5
Right of use assets obtained in exchange for new operating lease liability	256	963
Cash paid during the period for income taxes (net of refunds)	$ 1	$ 0