Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Revenue	$ 45,471	$ 31,561	$ 138,953	$ 109,246
Cost of services	33,257	22,741	103,623	81,080
Gross profit	12,214	8,820	35,330	28,166
Operating costs and expenses
Selling, general and administrative	10,332	8,606	29,396	27,837
Depreciation and amortization of property and equipment	250	292	775	793
Amortization of acquired intangible assets	6	80	95	240
Write-off of receivables and professional fees incurred related to arbitration	0	0	0	8,397
Tax credit professional fees	50	0	170	0
Gain on sale of assets	(2,151)	0	(2,151)	0
Operating costs and expenses, net of gain on sale of assets	8,487	8,978	28,285	37,267
Operating income (loss)	3,727	(158)	7,045	(9,101)
Other expense (income)
Interest expense and other, net	64	126	307	650
Change in fair value of contingent consideration	0	36	52	108
Loss (gain) on foreign currency transactions	(48)	91	(130)	137
Other expense, net	16	253	229	895
Income (loss) before income taxes	3,711	(411)	6,816	(9,996)
Income tax expense (benefit)	959	(167)	1,801	(2,815)
Net income (loss)	$ 2,752	$ (244)	$ 5,015	$ (7,181)
Basic net earnings (loss) per share (in dollars per share)	$ 0.25	$ (0.02)	$ 0.45	$ (0.58)
Diluted net earnings (loss) per share (in dollars per share)	$ 0.24	$ (0.02)	$ 0.43	$ (0.58)