Note 14 - Segment Information - Results of the Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Revenues	$ 191,100	$ 200,352
Cost of services	142,508	151,042
Gross profit	48,592	49,310
Selling, general and administrative	40,390	40,386
Depreciation and amortization of property and equipment	1,261	1,442
Amortization of acquired intangible assets	327	125
Tax credit professional fees	47	371
Operating income (loss)	6,567	5,415
Total assets	96,173	81,510
Capital expenditures	367	1,518
Severance, professional fees and other charges	0	1,571
Engineering [Member]
Revenues	67,873	86,078
Cost of services	49,395	63,488
Gross profit	18,478	22,590
Selling, general and administrative	13,648	16,073
Depreciation and amortization of property and equipment	841	961
Amortization of acquired intangible assets	327	125
Tax credit professional fees
Operating income (loss)	3,662	5,431
Total assets	52,342	47,837
Capital expenditures	82	930
Severance, professional fees and other charges
Specialty Health Care [Member]
Revenues	89,348	83,663
Cost of services	68,464	64,860
Gross profit	20,884	18,803
Selling, general and administrative	17,643	16,500
Depreciation and amortization of property and equipment	336	383
Amortization of acquired intangible assets
Tax credit professional fees
Operating income (loss)	2,905	1,920
Total assets	29,781	21,636
Capital expenditures	121	222
Severance, professional fees and other charges
Information Technology [Member]
Revenues	33,879	30,611
Cost of services	24,649	22,694
Gross profit	9,230	7,917
Selling, general and administrative	9,099	7,813
Depreciation and amortization of property and equipment	84	98
Amortization of acquired intangible assets
Tax credit professional fees
Operating income (loss)	47	6
Total assets	8,178	7,577
Capital expenditures	69	120
Severance, professional fees and other charges
Corporate Segment [Member]
Revenues
Cost of services
Gross profit
Selling, general and administrative
Depreciation and amortization of property and equipment
Amortization of acquired intangible assets
Tax credit professional fees	47	371
Operating income (loss)	(47)	(1,942)
Total assets	5,872	4,460
Capital expenditures	$ 95	246
Severance, professional fees and other charges		$ 1,571