Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Information
Total revenues	$ 214,646	$ 220,395	$ 432,657	$ 439,936
Amortization of intangible assets	(67)	0	(67)	0
Restructuring charges	(1,508)	(604)	(1,406)	(953)
OPERATING INCOME (LOSS) FROM CONTINUING OPERATIONS	(2,412)	5,035	4,621	9,821
Operating segment | International
Segment Information
Total revenues	109,830	113,935	224,811	226,610
Operating income (loss) from continuing operations before amortization and restructuring charges	3,231	6,000	10,055	10,951
Operating segment | North America
Segment Information
Total revenues	105,154	106,759	208,632	213,928
Operating income (loss) from continuing operations before amortization and restructuring charges	9,109	8,502	17,581	16,598
Operating segment | Other
Segment Information
Total revenues	567	895	1,221	1,742
Operating income (loss) from continuing operations before amortization and restructuring charges	(4)	82	133	118
Inter-segment
Segment Information
Total revenues	(905)	(1,194)	(2,007)	(2,344)
Corporate expenses
Segment Information
Operating income (loss) from continuing operations before amortization and restructuring charges	(13,173)	(8,945)	(21,675)	(16,893)
Segment reconciling items
Segment Information
Operating income (loss) from continuing operations before amortization and restructuring charges	(837)	5,639	6,094	10,774
Amortization of intangible assets	(67)	0	(67)	0
Restructuring charges	$ (1,508)	$ (604)	$ (1,406)	$ (953)