Note 13 - Segment Information - Results of the Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021	Jan. 01, 2022
Revenues	$ 81,961	$ 44,549
Cost of services	58,541	33,699
Gross profit	23,420	10,850
Selling, general and administrative	14,147	9,129
Depreciation and amortization of property and equipment	238	266
Operating income	9,035	1,375
Total assets	84,210	77,770	$ 72,852
Capital expenditures	217	47
Amortization of acquired intangible assets	0	80
Engineering [Member]
Revenues	19,898	14,466
Cost of services	14,664	11,260
Gross profit	5,234	3,206
Selling, general and administrative	4,107	3,093
Depreciation and amortization of property and equipment	95	156
Operating income	1,032	(123)
Total assets	30,122	35,898
Capital expenditures	165	9
Amortization of acquired intangible assets		80
Specialty Health Care [Member]
Revenues	52,184	21,137
Cost of services	37,183	16,099
Gross profit	15,001	5,038
Selling, general and administrative	7,976	4,093
Depreciation and amortization of property and equipment	120	82
Operating income	6,905	863
Total assets	42,618	26,111
Capital expenditures	27	28
Amortization of acquired intangible assets		0
Information Technology [Member]
Revenues	9,879	8,946
Cost of services	6,694	6,340
Gross profit	3,185	2,606
Selling, general and administrative	2,064	1,943
Depreciation and amortization of property and equipment	23	28
Operating income	1,098	635
Total assets	8,104	8,385
Capital expenditures	20	6
Amortization of acquired intangible assets		0
Corporate Segment [Member]
Revenues	0	0
Cost of services	0	0
Gross profit	0	0
Selling, general and administrative	0	0
Depreciation and amortization of property and equipment	0	0
Operating income	0	0
Total assets	3,366	7,376
Capital expenditures	$ 5	4
Amortization of acquired intangible assets		$ 0