Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Income Statement [Abstract]
Revenue	$ 74,039	$ 78,065	$ 226,566	$ 247,401
Direct costs	61,010	64,193	185,651	203,072
Selling, general and administrative expenses	12,619	14,567	38,482	42,060
Goodwill impairment		15,785		37,329
Operating income (loss)	410	(16,480)	2,433	(35,060)
Interest and other income	18	140	71	165
Interest and other expense	129	63	278	247
Income (loss) before income taxes	299	(16,403)	2,226	(35,142)
Provision (benefit) for income taxes	259	(220)	1,001	639
Net income (loss)	$ 40	$ (16,183)	$ 1,225	$ (35,781)
Net income (loss) per share:
Basic	$ 0.00	$ (1.03)	$ 0.08	$ (2.30)
Diluted	$ 0.00	$ (1.03)	$ 0.08	$ (2.30)
Weighted average shares outstanding:
Basic	15,013	15,649	15,150	15,586
Diluted	15,316	15,649	15,408	15,586
Cash dividend per common share		$ 0.06		$ 0.18