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Note 14 - Segment Information - Results of the Segments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2022
Jan. 02, 2021
Revenues $ 203,875 $ 150,409
Cost of services 150,751 111,554
Gross profit 53,124 38,855
Selling, general and administrative 42,019 37,791
Depreciation and amortization of property and equipment 1,007 1,065
Amortization of acquired intangible assets 95 321
Remeasurement of acquisition-related contingent consideration (1,713) 0
Gain on sale of assets (2,420) 0
Operating income (loss) 14,136 (10,950)
Total assets 72,852 68,339
Capital expenditures 1,576 460
Write-off of receivables and professional fees incurred related to arbitration 0 8,397
Impairment of right of use assets and related costs 0 2,231
Engineering [Member]    
Revenues 66,172 57,715
Cost of services 50,109 41,227
Gross profit 16,063 16,488
Selling, general and administrative 14,210 13,021
Depreciation and amortization of property and equipment 521 638
Amortization of acquired intangible assets 95 321
Remeasurement of acquisition-related contingent consideration (1,713)  
Gain on sale of assets (2,420)  
Operating income (loss) 5,370 (5,889)
Total assets 28,343 33,782
Capital expenditures 481 26
Write-off of receivables and professional fees incurred related to arbitration   8,397
Impairment of right of use assets and related costs   0
Specialty Health Care [Member]    
Revenues 98,495 60,481
Cost of services 73,177 47,116
Gross profit 25,318 13,365
Selling, general and administrative 19,490 15,601
Depreciation and amortization of property and equipment 373 319
Amortization of acquired intangible assets 0 0
Remeasurement of acquisition-related contingent consideration 0  
Gain on sale of assets 0  
Operating income (loss) 5,455 (2,555)
Total assets 32,809 19,141
Capital expenditures 563 36
Write-off of receivables and professional fees incurred related to arbitration   0
Impairment of right of use assets and related costs   0
Information Technology [Member]    
Revenues 39,208 32,213
Cost of services 27,465 23,211
Gross profit 11,743 9,002
Selling, general and administrative 8,319 9,169
Depreciation and amortization of property and equipment 113 108
Amortization of acquired intangible assets 0 0
Remeasurement of acquisition-related contingent consideration 0  
Gain on sale of assets 0  
Operating income (loss) 3,331 (275)
Total assets 8,676 7,498
Capital expenditures 173 48
Write-off of receivables and professional fees incurred related to arbitration   0
Impairment of right of use assets and related costs   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
Amortization of acquired intangible assets 0 0
Remeasurement of acquisition-related contingent consideration 0  
Gain on sale of assets 0  
Operating income (loss) 0 (2,231)
Total assets 3,024 7,918
Capital expenditures $ 359 350
Write-off of receivables and professional fees incurred related to arbitration   0
Impairment of right of use assets and related costs   $ 2,231