Condensed Consolidated Statements of Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Income Statement [Abstract]
Revenue	$ 74,588	$ 82,759	$ 152,790	$ 172,176
Cost of services	53,593	63,009	111,660	131,831
Gross profit	20,995	19,750	41,130	40,345
Selling, general and administrative expenses	20,710	16,577	40,138	33,973
Operating income	285	3,173	992	6,372
Interest and other income	72	99	200	190
Interest and other expense	436	484	794	832
Income (loss) before income taxes	(79)	2,788	398	5,730
Provision for income taxes	51	748	213	1,450
Net income (loss)	$ (130)	$ 2,040	$ 185	$ 4,280
Net income (loss) per share:
Basic	$ (0.01)	$ 0.14	$ 0.01	$ 0.30
Diluted	$ (0.01)	$ 0.13	$ 0.01	$ 0.28
Weighted average shares outstanding:
Basic	14,832	14,419	14,768	14,309
Diluted	14,832	15,122	15,399	15,050