CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue:
Operating revenue	$ 505,936	$ 444,118	$ 438,690
Reimbursable expenses	38,269	30,352	43,393
Total revenue	544,205	474,470	482,083
Operating Expense:
Direct cost of operating revenue (exclusive of depreciation and amortization shown separately below)	248,158	216,317	210,458
Reimbursable expenses	36,192	29,592	41,766
Selling, general and administrative expense	170,352	167,041	149,045
Depreciation and software and leasehold amortization	37,810	36,042	30,971
Amortization of identifiable intangible assets	18,347	12,655	18,834
Impairment of goodwill and identifiable intangible assets	1,162
Fair value adjustment to contingent consideration	(1,182)	1,142	2,580
Other operating income (expense)	5,291	880	(791)
Total operating expense	516,130	463,669	452,863
Operating income	28,075	10,801	29,220
Interest expense (income):
Interest expense	20,445	16,674	12,130
Interest income	(32)	(21)	(15)
Net Interest Expense	20,413	16,653	12,115
Income (loss) before income taxes	7,662	(5,852)	17,105
Provision for (benefit from) income taxes	19,600	(4,515)	5,995
Net income (loss)	$ (11,938)	$ (1,337)	$ 11,110
Net income (loss) per common share:
Basic (in dollars per share)	$ (0.33)	$ (0.04)	$ 0.31
Diluted (in dollars per share)	$ (0.33)	$ (0.04)	$ 0.30
Weighted average common shares outstanding:
Basic (in shares)	36,584	35,512	35,434
Diluted (in shares)	36,584	35,512	36,302