Note 13 - Segment Information - Results of the Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2023	Apr. 02, 2022	Dec. 31, 2022
Revenues	$ 67,124	$ 81,961
Cost of services	48,100	58,541
Gross profit	19,024	23,420
Selling, general and administrative	13,396	14,147
Depreciation and amortization of property and equipment	271	238
Amortization of acquired intangible assets	45	0
Gain on sale of assets	(395)	0
Operating income	5,707	9,035
Total assets	97,528	84,210	$ 87,964
Property and equipment acquired	332	217
Specialty Health Care [Member]
Revenues	39,130	52,184
Cost of services	27,458	37,183
Gross profit	11,672	15,001
Selling, general and administrative	7,216	7,976
Depreciation and amortization of property and equipment	108	120
Amortization of acquired intangible assets	0
Gain on sale of assets	0
Operating income	4,348	6,905
Total assets	40,477	42,618
Property and equipment acquired	18	27
Engineering [Member]
Revenues	18,490	19,898
Cost of services	14,444	14,664
Gross profit	4,046	5,234
Selling, general and administrative	3,913	4,107
Depreciation and amortization of property and equipment	127	95
Amortization of acquired intangible assets	0
Gain on sale of assets	(395)
Operating income	401	1,032
Total assets	36,065	30,122
Property and equipment acquired	288	165
Life Sciences and IT [Member]
Revenues	9,504	9,879
Cost of services	6,198	6,694
Gross profit	3,306	3,185
Selling, general and administrative	2,267	2,064
Depreciation and amortization of property and equipment	36	23
Amortization of acquired intangible assets	45
Gain on sale of assets	0
Operating income	958	1,098
Total assets	15,901	8,104
Property and equipment acquired	17	20
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
Amortization of acquired intangible assets	0
Gain on sale of assets	0
Operating income	0	0
Total assets	5,085	3,366
Property and equipment acquired	$ 9	$ 5