Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jun. 25, 2022	Jul. 01, 2023	Jun. 25, 2022
Condensed Consolidated Statements of Operations (Unaudited)
Operating revenues	$ 9,738	$ 11,355	$ 22,931	$ 18,721
Operating costs	10,120	10,023	25,135	18,047
Gross profit (loss)	(382)	1,332	(2,204)	674
Selling, general and administrative expenses	3,922	2,890	8,338	5,733
Operating loss	(4,304)	(1,558)	(10,542)	(5,059)
Other income (expense):
Other income, net	46	21	49	31
Interest expense, net	(59)	(52)	(131)	(103)
Loss from continuing operations before income taxes	(4,317)	(1,589)	(10,624)	(5,131)
Provision (benefit) for federal and state income taxes	22	(56)	44	22
Net loss	$ (4,339)	$ (1,533)	$ (10,668)	$ (5,153)
Basic and diluted loss per common share:	$ (0.11)	$ (0.04)	$ (0.27)	$ (0.15)
Basic and diluted weighted average shares used in computing loss per share:	39,759	35,444	38,975	35,337