Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Information
Total revenues	$ 165,912		$ 197,944	$ 340,963	$ 399,949
Operating income (loss) from continuing operations	(53,273)		2,893	(148,613)	8,829
Goodwill Impairment	(29,560)	$ (85,900)	0	(115,483)	0
Amortization of intangible assets	(1,433)		(107)	(2,026)	(107)
Restructuring charges	(394)		(675)	(739)	(736)
International
Segment Information
Goodwill Impairment				(115,483)
North America
Segment Information
Goodwill Impairment				0
Operating segment
Segment Information
Operating income (loss) from continuing operations	(21,886)		3,675	(30,365)	9,672
Operating segment | International
Segment Information
Total revenues	71,033		89,295	146,997	185,982
Operating income (loss) from continuing operations	(9,073)		5,225	(10,109)	11,638
Operating segment | North America
Segment Information
Total revenues	95,095		108,825	194,680	214,392
Operating income (loss) from continuing operations	895		10,387	7,439	20,383
Operating segment | Other
Segment Information
Total revenues	789		833	1,553	1,621
Operating income (loss) from continuing operations	49		49	174	125
Inter-segment
Segment Information
Total revenues	(1,005)		(1,009)	(2,267)	(2,046)
Corporate expenses
Segment Information
Operating income (loss) from continuing operations	(13,757)		(11,986)	(27,869)	(22,474)
Segment reconciling items
Segment Information
Goodwill Impairment	(29,560)		0	(115,483)	0
Amortization of intangible assets	(1,433)		(107)	(2,026)	(107)
Restructuring charges	$ (394)		$ (675)	$ (739)	$ (736)