Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Revenues	$ 506,840	$ 441,586	$ 288,027
Costs of Revenues, excluding amortization
Costs of revenue, excluding amortization	374,838	332,716	196,908
Operating expenses	107,700	105,126	71,816
Intangible amortization expense	12,120	11,416	6,113
Asset impairment charges	4,266	0	0
Operating income (loss)	7,916	(7,672)	13,190
Interest expense, net	23,407	17,015	10,812
Loss on extinguishment of debt	11,676	0	0
Other non-operating income, net	(153)	(436)	(1,426)
(Loss) earnings before income taxes from continuing operations	(27,014)	(24,251)	3,804
Income tax (benefit) expense, net on continuing operations	(4,734)	(10,862)	2,452
Net (loss) income from continuing operations	(22,280)	(13,389)	1,352
Loss before income taxes from discontinued operations	0	0	(28,082)
Income tax benefit, net on discontinued operations	0	0	(489)
Net loss on discontinued operations	0	0	(27,593)
Net loss	$ (22,280)	$ (13,389)	$ (26,241)
Weighted average common shares outstanding
Basic (in shares)	49,833	48,921	40,501
Diluted (in shares)	49,833	48,921	41,012
Basic net (loss) earnings per share:
Continuing operations (usd per share)	$ (0.45)	$ (0.27)	$ 0.03
Discontinued operations (usd per share)	0.00	0.00	(0.68)
Basic net (loss) earnings per share (usd per share)	(0.45)	(0.27)	(0.65)
Diluted net (loss) earnings per share:
Continuing operations (usd per share)	(0.45)	(0.27)	0.03
Discontinued operations (usd per share)	0.00	0.00	(0.67)
Diluted net (loss) earnings per share (usd per share)	$ (0.45)	$ (0.27)	$ (0.64)