Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Revenue	$ 419,036	$ 424,415	$ 396,275
Direct costs	330,327	333,086	311,984
Selling, general, and administrative expenses	63,982	66,867	64,981
Operating income	24,727	24,462	19,310
Interest and other income	58	156	231
Non-taxable life insurance proceeds	0	1,268	0
Interest and other expense	446	441	418
Income before income taxes	24,339	25,445	19,123
Provision for income taxes	8,660	9,280	7,185
Net Income	$ 15,679	$ 16,165	$ 11,938
Net income per share
Basic (in dollars per share)	$ 1.02	$ 1.07	$ 0.80
Diluted (in dollars per share)	$ 0.92	$ 0.96	$ 0.71
Weighted average shares outstanding
Basic (in shares)	15,365	15,172	14,968
Diluted (in shares)	16,954	16,841	16,731
Cash dividend declared per share	$ 0.20	$ 0.00	$ 0.00