Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenue from services	$ 199,443	$ 192,617	$ 396,026	$ 378,581
Operating expenses:
Direct operating expenses	144,597	144,254	290,134	283,181
Selling, general and administrative expenses	44,675	40,891	87,608	82,057
Bad debt expense	228	131	477	222
Depreciation	1,059	989	2,064	1,949
Amortization	1,406	983	2,813	1,965
Acquisition-related contingent consideration	183	0	470	0
Acquisition and integration costs	0	40	0	158
Restructuring costs	0	1,007	0	1,007
Impairment charges	24,311	0	24,311	0
Total operating expenses	216,459	188,295	407,877	370,539
(Loss) income from operations	(17,016)	4,322	(11,851)	8,042
Other expenses (income):
Interest expense	1,608	1,772	3,243	3,509
Loss (gain) on derivative liability	3,571	(362)	(12,865)	(2,509)
Loss on early extinguishment of debt	1,568	0	1,568	0
Other (income) expense, net	(34)	27	(51)	70
(Loss) income before income taxes	(23,729)	2,885	(3,746)	6,972
Income tax (benefit) expense	(6,634)	205	(5,837)	1,242
Consolidated net (loss) income	(17,095)	2,680	2,091	5,730
Less: Net income attributable to noncontrolling interest in subsidiary	142	107	306	223
Net (loss) income attributable to common shareholders	$ (17,237)	$ 2,573	$ 1,785	$ 5,507
Net (loss) income per share attributable to common shareholders - Basic
Net income (loss) per share attributable to common shareholders - Basic (in dollars per share)	$ (0.54)	$ 0.08	$ 0.06	$ 0.18
Net (loss) income per share attributable to common shareholders - Diluted
Net income (loss) per share attributable to common shareholders - Diluted (in dollars per share)	$ (0.54)	$ 0.08	$ (0.26)	$ 0.13
Weighted average common shares outstanding:
Basic (shares)	32,085	31,398	32,021	31,346
Diluted (shares)	32,085	32,040	36,194	35,508