Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues	$ 285,067	$ 289,577	$ 883,877	$ 876,871
Operating expenses	216,126	212,871	655,489	635,490
Gross margin	68,941	76,706	228,388	241,381
Selling, general and administrative expenses	85,179	80,749	265,557	236,612
Restructuring and other related charges, net	2,637	0	1,661	0
(Gain) loss on revaluation of contingent consideration	0	0	(1,174)	2,184
Goodwill impairment loss	75,241	0	75,241	0
Operating income (loss)	(94,116)	(4,043)	(112,897)	2,585
Interest expense, net	6,369	3,211	13,899	9,554
Write-off of deferred loan costs	1,244	0	1,244	0
Gain on convertible debt embedded derivative	(6,292)	0	(6,292)	0
Foreign currency (gain) loss and other	157	(61)	515	(199)
Loss from continuing operations before income taxes	(95,594)	(7,193)	(122,263)	(6,770)
Less: Income tax benefit	(12,066)	(2,656)	(18,141)	(2,643)
Loss from continuing operations	(83,528)	(4,537)	(104,122)	(4,127)
Income from discontinued operations, net of income tax	0	316	0	828
Net loss	$ (83,528)	$ (4,221)	$ (104,122)	$ (3,299)
Basic earnings (loss) per common share:
Continuing operations (in usd per share)	$ (2.80)	$ (0.15)	$ (3.49)	$ (0.15)
Discontinued operations (in usd per share)	0.00	0.01	0.00	0.03
Net loss (in usd per share)	(2.80)	(0.14)	(3.49)	(0.12)
Diluted earnings (loss) per common share:
Continuing operations (in usd per share)	(2.80)	(0.15)	(3.49)	(0.15)
Discontinued operations (in usd per share)	0.00	0.01	0.00	0.03
Net loss (in usd per share)	$ (2.80)	$ (0.14)	$ (3.49)	$ (0.12)