Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenue	$ 149,413	$ 133,691	$ 288,886	$ 258,723
Cost of revenue	126,454	111,118	244,649	218,471
Gross profit	22,959	22,573	44,237	40,252
General and administrative expenses	15,402	14,121	31,529	27,980
Sales and marketing expenses	1,906	1,106	3,895	1,831
Restructuring charges	182	2,495	1,301	2,930
Gain on change in fair value of contingent consideration, net	627	894	677	3,446
Operating income	6,096	5,745	8,189	10,957
Interest expense	1,679	(150)	3,277	536
Other income (expense)	102	(988)	88	(1,152)
Income before income tax expense	4,519	4,907	5,000	9,269
Income tax expense	1,300	1,332	1,447	3,062
Net income	$ 3,219	$ 3,575	$ 3,553	$ 6,207
Basic weighted average shares outstanding (in shares)	16,747	16,510	16,710	16,565
Diluted weighted average shares outstanding (in shares)	16,780	16,601	16,741	16,657
Per common share data:
Basic earnings per share (in dollars per share)	$ 0.19	$ 0.22	$ 0.21	$ 0.37
Diluted earnings per share (in dollars per share)	$ 0.19	$ 0.22	$ 0.21	$ 0.37