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Note 14 - Segment Information - Results of the Segments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 03, 2026
Dec. 28, 2024
Revenues $ 319,404 $ 278,380
Cost of services 231,461 198,602
Gross profit 87,943 79,778
Selling, general and administrative 60,932 56,787
Depreciation and amortization of property and equipment 1,918 1,419
Operating income (loss) 25,093 22,325
Total assets 134,397 132,077
Property and equipment acquired 1,595 2,572
Amortization of acquired intangible assets   683
Potential stock issuance and financing transactions 0 323
Remeasurement of contingent consideration 0 (1,759)
Specialty Health Care [Member]    
Revenues 164,104 142,679
Cost of services 116,702 100,146
Gross profit 47,402 42,533
Selling, general and administrative 24,220 22,213
Depreciation and amortization of property and equipment 393 386
Operating income (loss) 22,789 19,934
Total assets 46,541 43,180
Property and equipment acquired 238 296
Amortization of acquired intangible assets   0
Potential stock issuance and financing transactions   0
Remeasurement of contingent consideration   0
Engineering [Member]    
Revenues 120,486 96,459
Cost of services 93,104 73,916
Gross profit 27,382 22,543
Selling, general and administrative 11,976 11,869
Depreciation and amortization of property and equipment 771 613
Operating income (loss) 14,635 10,061
Total assets 60,562 52,160
Property and equipment acquired 480 691
Amortization of acquired intangible assets   0
Potential stock issuance and financing transactions   0
Remeasurement of contingent consideration   0
Life Sciences, Data & Solutions [Member]    
Revenues 34,814 39,242
Cost of services 21,655 24,540
Gross profit 13,159 14,702
Selling, general and administrative 6,694 6,875
Depreciation and amortization of property and equipment 148 150
Operating income (loss) 6,317 8,753
Total assets 13,936 22,210
Property and equipment acquired 36 28
Amortization of acquired intangible assets   683
Potential stock issuance and financing transactions   0
Remeasurement of contingent consideration   (1,759)
Corporate Segment [Member]    
Revenues 0 0
Cost of services 0 0
Gross profit 0 0
Selling, general and administrative 18,042 15,830
Depreciation and amortization of property and equipment 606 270
Operating income (loss) (18,648) (16,423)
Total assets 13,358 14,527
Property and equipment acquired $ 841 1,557
Amortization of acquired intangible assets   0
Potential stock issuance and financing transactions   323
Remeasurement of contingent consideration   $ 0