Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenue	$ 139,005	$ 123,566	$ 427,891	$ 382,289
Cost of revenue	117,338	104,367	361,987	322,838
Gross profit	21,667	19,199	65,904	59,451
General and administrative expenses	15,240	12,227	46,769	40,207
Sales and marketing expenses	1,830	1,297	5,725	3,128
Restructuring charges	104	0	1,405	2,930
Gain on change in fair value of contingent consideration, net	0	526	677	3,972
Operating income	4,493	6,201	12,682	17,158
Interest expense	1,575	1,095	4,852	1,631
Other income (expense)	184	(760)	272	(1,912)
Income before income tax expense	3,102	4,346	8,102	13,615
Income tax expense	961	1,102	2,408	4,164
Net income	$ 2,141	$ 3,244	$ 5,694	$ 9,451
Basic weighted average shares outstanding (in shares)	16,901	16,536	16,773	16,555
Diluted weighted average shares outstanding (in shares)	16,939	16,628	16,807	16,647
Per common share data:
Basic earnings per share (in dollars per share)	$ 0.13	$ 0.20	$ 0.34	$ 0.57
Diluted earnings per share (in dollars per share)	$ 0.13	$ 0.20	$ 0.34	$ 0.57