Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020
Condensed Consolidated Statements of Operations (Unaudited)
Operating revenues	$ 5,921	$ 15,729	$ 29,449	$ 52,871
Operating costs	6,735	14,585	29,177	46,014
Gross profit (loss)	(814)	1,144	272	6,857
Selling, general and administrative expenses	3,089	2,174	9,914	6,621
Operating profit (loss)	(3,903)	(1,030)	(9,642)	236
Other income (expense):
Other income, net	6,371	4	8,061	6
Interest expense, net	(46)	(62)	(161)	(103)
Income (loss) from operations before income taxes	2,422	(1,088)	(1,742)	139
Provision for federal and state income taxes	21	22	67	80
Net income (loss)	$ 2,401	$ (1,110)	$ (1,809)	$ 59
Basic and diluted income (loss) per common share:	$ 0.07	$ (0.04)	$ (0.06)	$ 0.00
Basic and diluted weighted average shares used in computing income (loss) per share:	35,159	27,507	30,776	27,529