Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Revenues	$ 200,352	$ 186,737
Engineering Services [Member]
Revenues	86,078	82,753
Engineering Services [Member] | Time-and-materials Contract [Member]
Revenues	71,639	71,894
Engineering Services [Member] | Fixed-price Contract [Member]
Revenues	14,424	10,859
Engineering Services [Member] | Permanent Placement Services [Member]
Revenues	15
Health Care [Member]
Revenues	83,663	71,316
Health Care [Member] | Time-and-materials Contract [Member]
Revenues	82,153	69,033
Health Care [Member] | Permanent Placement Services [Member]
Revenues	1,510	2,283
Technology Service [Member]
Revenues	30,611	32,668
Technology Service [Member] | Time-and-materials Contract [Member]
Revenues	30,361	32,320
Technology Service [Member] | Permanent Placement Services [Member]
Revenues	$ 250	$ 348