CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenue from services	$ 767,421	$ 617,825	$ 438,311
Operating expenses:
Direct operating expenses	570,056	460,021	324,851
Selling, general and administrative expenses	161,275	141,018	106,117
Bad debt expense	999	1,016	1,078
Depreciation	3,856	3,866	3,886
Amortization	4,210	3,575	2,294
Loss on sale of business	2,184	0	0
Acquisition and integration costs	902	7,957	473
Restructuring costs	1,274	840	484
Legal settlement charge	0	0	750
Impairment charges	2,100	10,000	6,400
Total operating expenses	746,856	628,293	446,333
Income (loss) from operations	20,565	(10,468)	(8,022)
Other expenses (income):
Interest expense	6,810	4,160	849
Loss on derivative liability	9,901	16,671	0
Loss on early extinguishment and modification of debt	0	0	1,419
Other (income) expense, net	(306)	19	(251)
Income (loss) from continuing operations before income taxes	4,160	(31,318)	(10,039)
Income tax (benefit) expense	(794)	216	44,211
Income (loss) from continuing operations	4,954	(31,534)	(54,250)
Income from discontinued operations, net of income taxes	0	0	2,281
Consolidated net income (loss)	4,954	(31,534)	(51,969)
Less: Net income attributable to noncontrolling interest in subsidiary	536	249	0
Net income (loss) attributable to common shareholders	$ 4,418	$ (31,783)	$ (51,969)
Basic and diluted income (loss) per share attributable to common shareholders
Continuing operations (usd per share)	$ 0.14	$ (1.02)	$ (1.75)
Discontinued operations (usd per share)	0.00	0.00	0.07
Net (loss) income (usd per share)	$ 0.14	$ (1.02)	$ (1.68)
Weighted average common shares outstanding—basic (shares)	31,514	31,190	31,009
Weighted average common shares outstanding—diluted (shares)	32,162	31,190	31,009