Note 14 - Segment Information - Results of the Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016
Revenues	$ 45,512	$ 45,379	$ 91,853	$ 92,555
Cost of services	33,999	33,275	67,988	67,775
Gross profit	12,113	12,104	23,865	24,780
Selling, general and administrative	10,075	10,177	20,392	20,642
Change in contingent consideration	781		781
Depreciation and amortization	410	399	807	789
Operating income (loss)	847	1,528	1,885	3,349
Total assets	65,626	70,741	65,626	70,741	$ 69,831
Capital expenditures	460	263	552	657
Engineering [Member]
Revenues	20,586	18,742	39,810	37,427
Cost of services	14,889	13,715	29,076	27,568
Gross profit	5,697	5,027	10,734	9,859
Selling, general and administrative	4,184	3,944	8,219	7,760
Change in contingent consideration
Depreciation and amortization	282	284	566	560
Operating income (loss)	1,231	799	1,949	1,539
Total assets	34,050	35,768	34,050	35,768
Capital expenditures	40	174	109	455
Information Technology [Member]
Revenues	8,557	10,957	17,167	23,697
Cost of services	6,200	8,172	12,657	17,120
Gross profit	2,357	2,785	4,510	6,577
Selling, general and administrative	2,144	2,698	4,497	5,841
Change in contingent consideration
Depreciation and amortization	40	48	81	100
Operating income (loss)	173	39	(68)	636
Total assets	11,260	13,250	11,260	13,250
Capital expenditures		24		48
Specialty Health Care [Member]
Revenues	16,369	15,680	34,876	31,431
Cost of services	12,310	11,388	26,255	23,087
Gross profit	4,059	4,292	8,621	8,344
Selling, general and administrative	3,747	3,535	7,676	7,041
Change in contingent consideration
Depreciation and amortization	88	67	160	129
Operating income (loss)	224	690	785	1,174
Total assets	16,742	17,525	16,742	17,525
Capital expenditures	415	53	415	128
Corporate Segment [Member]
Revenues
Cost of services
Gross profit
Selling, general and administrative
Change in contingent consideration	781		781
Depreciation and amortization
Operating income (loss)	(781)		(781)
Total assets	3,574	4,198	3,574	4,198
Capital expenditures	$ 5	$ 12	$ 28	$ 26