Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenue	$ 358,769	$ 301,210	$ 324,893
Direct costs	290,282	245,234	265,711
Selling, general and administrative expenses	66,407	51,808	54,784
Goodwill impairment charges			37,329
Operating income (loss)	2,080	4,168	(32,931)
Interest and other income	223	88	188
Non-taxable life insurance gain	807	390
Interest and other expense	841	589	793
Income (loss) before income taxes	2,269	4,057	(33,536)
Provision for income taxes	5,086	3,251	1,102
Net income (loss)	$ (2,817)	$ 806	$ (34,638)
Net income (loss) per share:
Basic	$ (0.20)	$ 0.05	$ (2.22)
Diluted	$ (0.20)	$ 0.05	$ (2.22)
Weighted average shares outstanding:
Basic	13,805	15,055	15,593
Diluted	13,805	15,324	15,593
Cash dividend per common share			$ 0.18