Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
Income Statement [Abstract]
Revenue	$ 108,495	$ 103,367
Direct costs	85,896	81,515
Selling, general, and administrative expenses	16,417	16,253
Operating income	6,182	5,599
Interest and other income	10	44
Interest and other expense	119	94
Income before income taxes	6,073	5,549
Provision for income taxes	2,016	2,189
Net income	$ 4,057	$ 3,360
Net income per share
Earnings per share, basic (in dollars per share)	$ 0.26	$ 0.22
Earnings per share, diluted (in dollars per share)	$ 0.24	$ 0.20
Weighted average shares outstanding
Basic (in shares)	15,430	15,169
Diluted (in shares)	17,066	16,872
Cash dividend declared (in dollars per share)	$ 0.05	$ 0.00