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Note 14 - Results of the Segments (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 02, 2016
Jul. 04, 2015
Jul. 02, 2016
Jul. 04, 2015
Jan. 02, 2016
Engineering [Member]          
Revenues $ 18,742 $ 19,827 $ 37,427 $ 42,618  
Cost of services 13,715 15,490 27,568 32,659  
Gross profit 5,027 4,337 9,859 9,959  
Selling, general and administrative 3,944 4,039 7,760 8,317  
Depreciation and amortization 284 256 560 491  
Operating income 799 42 1,539 1,151  
Total assets 35,768 45,541 35,768 45,541  
Capital expenditures 174 375 455 773  
Information Technology [Member]          
Revenues 10,957 14,859 23,697 29,513  
Cost of services 8,172 10,336 17,120 20,430  
Gross profit 2,785 4,523 6,577 9,083  
Selling, general and administrative 2,698 3,827 5,841 7,526  
Depreciation and amortization 48 45 100 95  
Operating income 39 651 636 1,462  
Total assets 13,250 15,892 13,250 15,892  
Capital expenditures 24 48  
Specialty Health Care [Member]          
Revenues 15,680 10,600 31,431 21,121  
Cost of services 11,388 7,370 23,087 14,770  
Gross profit 4,292 3,230 8,344 6,351  
Selling, general and administrative 3,535 2,680 7,041 5,335  
Depreciation and amortization 67 33 129 64  
Operating income 690 517 1,174 952  
Total assets 17,525 17,487 17,525 17,487  
Capital expenditures 53 128  
Corporate Segment [Member]          
Revenues  
Cost of services  
Gross profit  
Selling, general and administrative  
Depreciation and amortization  
Operating income  
Total assets 4,198 6,834 4,198 6,834  
Capital expenditures 12 4 26 221  
Revenues 45,379 45,286 92,555 93,252  
Cost of services 33,275 33,196 67,775 67,859  
Gross profit 12,104 12,090 24,780 25,393  
Selling, general and administrative 10,177 10,546 20,642 21,178  
Depreciation and amortization 399 334 789 650  
Operating income 1,528 1,210 3,349 3,565  
Total assets 70,741 85,754 70,741 85,754 $ 81,336
Capital expenditures $ 263 $ 379 $ 657 $ 994