Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenue from services	$ 209,313,000	$ 199,443,000	$ 416,886,000	$ 396,026,000
Cost of services	152,785,000	144,597,000	307,083,000	290,134,000
Gross profit	56,528,000	54,846,000	109,803,000	105,892,000
Operating expenses:
Selling, general and administrative expenses	46,600,000	44,675,000	93,836,000	87,608,000
Bad debt expense	326,000	228,000	649,000	477,000
Depreciation and amortization	2,285,000	2,465,000	4,476,000	4,877,000
Acquisition-related contingent consideration	281,000	183,000	551,000	470,000
Acquisition and integration costs	587,000	0	587,000	0
Impairment charges	0	24,311,000	0	24,311,000
Total operating expenses	50,079,000	71,862,000	100,099,000	117,743,000
Income (loss) from operations	6,449,000	(17,016,000)	9,704,000	(11,851,000)
Other expenses (income):
Interest expense	535,000	1,608,000	1,754,000	3,243,000
Loss (gain) on derivative liability	0	3,571,000	(1,581,000)	(12,865,000)
Loss on early extinguishment of debt	0	1,568,000	4,969,000	1,568,000
Other income, net	(59,000)	(34,000)	(59,000)	(51,000)
Income (loss) before income taxes	5,973,000	(23,729,000)	4,621,000	(3,746,000)
Income tax expense (benefit)	753,000	(6,634,000)	1,119,000	(5,837,000)
Consolidated net income (loss)	5,220,000	(17,095,000)	3,502,000	2,091,000
Less: Net income attributable to noncontrolling interest in subsidiary	370,000	142,000	662,000	306,000
Net income (loss) attributable to common shareholders	$ 4,850,000	$ (17,237,000)	$ 2,840,000	$ 1,785,000
Net income (loss) per share attributable to common shareholders - Basic
Net income (loss) per share attributable to common shareholders - Basic (in dollars per share)	$ 0.14	$ (0.54)	$ 0.08	$ 0.06
Net income (loss) per share attributable to common shareholders - Diluted
Net income (loss) per share attributable to common shareholders - Diluted (in dollars per share)	$ 0.13	$ (0.54)	$ 0.05	$ (0.26)
Weighted average common shares outstanding:
Basic (shares)	35,651	32,085	34,269	32,021
Diluted (shares)	36,021	32,085	36,250	36,194