Note 14 - Segment Information - Results of the Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Revenues	$ 150,409	$ 191,100
Cost of services	111,554	142,508
Gross profit	38,855	48,592
Selling, general and administrative	37,551	40,390
Depreciation and amortization of property and equipment	1,065	1,261
Amortization of acquired intangible assets	321	327
Write-off of receivables and professional fees incurred related to arbitration	8,397
Impairment of right of use assets and related costs	2,231
Tax credit professional fees	240	47
Operating income (loss)	(10,950)	6,567
Total assets	68,339	96,173
Capital expenditures	460	367
Engineering [Member]
Revenues	57,715	67,873
Cost of services	41,227	49,395
Gross profit	16,488	18,478
Selling, general and administrative	12,931	13,648
Depreciation and amortization of property and equipment	638	841
Amortization of acquired intangible assets	321	327
Write-off of receivables and professional fees incurred related to arbitration	8,397
Impairment of right of use assets and related costs
Tax credit professional fees
Operating income (loss)	(5,799)	3,662
Total assets	33,782	52,342
Capital expenditures	26	82
Specialty Health Care [Member]
Revenues	60,481	89,348
Cost of services	47,116	68,464
Gross profit	13,365	20,884
Selling, general and administrative	15,504	17,643
Depreciation and amortization of property and equipment	319	336
Amortization of acquired intangible assets
Write-off of receivables and professional fees incurred related to arbitration
Impairment of right of use assets and related costs
Tax credit professional fees
Operating income (loss)	(2,458)	2,905
Total assets	19,141	29,781
Capital expenditures	36	121
Information Technology [Member]
Revenues	32,213	33,879
Cost of services	23,211	24,649
Gross profit	9,002	9,230
Selling, general and administrative	9,116	9,099
Depreciation and amortization of property and equipment	108	84
Amortization of acquired intangible assets
Write-off of receivables and professional fees incurred related to arbitration
Impairment of right of use assets and related costs
Tax credit professional fees
Operating income (loss)	(222)	47
Total assets	7,498	8,178
Capital expenditures	48	69
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
Write-off of receivables and professional fees incurred related to arbitration
Impairment of right of use assets and related costs	2,231
Tax credit professional fees	240	47
Operating income (loss)	(2,471)	(47)
Total assets	7,918	5,872
Capital expenditures	$ 350	$ 95