Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock Value [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Translation Adjustment [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2014	$ 765,601	$ 819	$ 241,170	$ (16,419)	$ (26,215)	$ 170,358	$ 395,888
Stockholders' equity rollforward
Net income (loss)	(209,467)					(126,183)	(83,284)
Translation adjustment, net of taxes	(20,791)				(16,920)		(3,871)
Comprehensive income (loss)	(230,258)
Distributions to public unitholders	(37,816)						37,816
Exercise of common stock options	302	7	295
Grants of restricted stock, net	(418)			418
Equity compensation expense	16,887		14,723				2,164
Other noncontrolling interests	118						118
Ending balance at Dec. 31, 2015	514,180	826	256,188	(16,837)	(43,135)	44,175	272,963
Stockholders' equity rollforward
Net income (loss)	(239,393)					(161,462)	(77,931)
Translation adjustment, net of taxes	(9,286)				(8,150)		(1,136)
Comprehensive income (loss)	(248,679)
Proceeds from issuance of CCLP common units		338
Distributions to public unitholders	(28,957)						28,957
Exercise of common stock options	21	11	10
Grants of restricted stock, net	(1,479)			(1,479)
Proceeds from Issuance of Common Stock	152,657		152,319
Equity compensation expense	12,917		10,719				2,198
Other noncontrolling interests	194						194
Ending balance at Dec. 31, 2016	400,466	1,175	419,236	(18,316)	(51,285)	(117,287)	166,943
Stockholders' equity rollforward
Net income (loss)	(62,183)					(39,048)	(23,135)
Translation adjustment, net of taxes	6,894				7,518		(624)
Comprehensive income (loss)	(55,289)
Proceeds from issuance of CCLP common units		10
Distributions to public unitholders	(18,826)						18,826
Grants of restricted stock, net	(335)			335
Proceeds from Issuance of Common Stock	10
Equity compensation expense	7,274		6,412				862
Other noncontrolling interests	(68)						(68)
Ending balance at Dec. 31, 2017	$ 352,561	$ 1,185	$ 425,648	$ (18,651)	$ (43,767)	$ (156,335)	$ 144,481