Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Condensed Consolidated Statements of Operations (Unaudited)
Operating revenues	$ 11,079	$ 17,882	$ 23,528	$ 37,142
Operating costs	10,997	15,429	22,442	31,429
Gross profit	82	2,453	1,086	5,713
Selling, general and administrative expenses	4,264	2,314	6,825	4,447
Operating profit (loss)	(4,182)	139	(5,739)	1,266
Other income (expense):
Other income, net	6	1	1,690	2
Interest expense, net	(57)	(36)	(115)	(41)
Income (loss) from operations before income taxes	(4,233)	104	(4,164)	1,227
Provision for federal and state income taxes	23	36	46	58
Net income (loss)	$ (4,256)	$ 68	$ (4,210)	$ 1,169
Basic and diluted income (loss) per common share:	$ (0.14)	$ 0.00	$ (0.15)	$ 0.04
Basic and diluted weighted average shares used in computing income (loss) per share:	29,599	27,413	28,573	27,413