CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Service revenue, net (includes $24.1 million, $24.0 million, $11.8 million and $2.0 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively)		$ 219,791	$ 370,621	$ 320,101
Reimbursed out-of-pocket revenue (includes $5.4 million, $6.9 million, $2.0 million and $0.1 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively)		28,708	50,961	38,958
Total revenue		248,499	421,582	359,059
Operating expenses:
Direct costs, excluding depreciation and amortization		117,550	198,510	163,707
Reimbursed out-of-pocket expenses (includes $5.4 million, $6.9 million, $2.0 million and $0.1 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively)		28,708	50,961	38,958
Selling, general and administrative		29,465	61,507	56,998
Acquisition and integration		9,297	0	0
Impairment of goodwill		0	0	9,313
Depreciation		4,610	7,442	6,379
Amortization		56,422	50,672	63,142
Total operating expenses		246,052	369,092	338,497
Income from operations		2,447	52,490	20,562
Other (expense) income, net:
Loss on extinguishment of debt		0	(10,726)	0
Miscellaneous (expense) income, net		(301)	(423)	(1,133)
Interest expense, net		(23,185)	(19,384)	(27,259)
Total other expense, net		(23,486)	(30,533)	(28,392)
Income (loss) before income taxes		(21,039)	21,957	(7,830)
Income tax provision (benefit)		(6,703)	8,532	843
Net income (loss)		$ (14,336)	$ 13,425	$ (8,673)
Net income (loss) per share attributable to common shareholders:
Basic		$ (0.46)	$ 0.38	$ (0.28)
Diluted		$ (0.46)	$ 0.37	$ (0.28)
Weighted average common shares outstanding:
Basic		30,869	35,690	31,346
Diluted		30,869	36,329	31,346
Predecessor
Revenue:
Service revenue, net (includes $24.1 million, $24.0 million, $11.8 million and $2.0 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively)	$ 70,250
Reimbursed out-of-pocket revenue (includes $5.4 million, $6.9 million, $2.0 million and $0.1 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively)	7,679
Total revenue	77,929
Operating expenses:
Direct costs, excluding depreciation and amortization	38,759
Reimbursed out-of-pocket expenses (includes $5.4 million, $6.9 million, $2.0 million and $0.1 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively)	7,679
Selling, general and administrative	10,203
Acquisition and integration	12,420
Impairment of goodwill	0
Depreciation	1,832
Amortization	5,199
Total operating expenses	76,092
Income from operations	1,837
Other (expense) income, net:
Loss on extinguishment of debt	0
Miscellaneous (expense) income, net	1,213
Interest expense, net	(3,272)
Total other expense, net	(2,059)
Income (loss) before income taxes	(222)
Income tax provision (benefit)	1,014
Net income (loss)	$ (1,236)
Net income (loss) per share attributable to common shareholders:
Basic	$ (0.05)
Diluted	$ (0.05)
Weighted average common shares outstanding:
Basic	25,047
Diluted	25,047