Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Information
Total revenues	$ 211,306	$ 215,057	$ 643,963	$ 654,993
Amortization of intangible assets	(65)	0	(132)	0
Restructuring charges	(21,244)	(14,000)	(22,650)	(14,953)
Total operating loss from continuing operations	(18,426)	(13,469)	(13,805)	(3,648)
Operating segment | International
Segment Information
Total revenues	105,007	110,879	329,818	337,489
Operating income from continuing operations before amortization and restructuring charges	1,822	4,577	11,877	15,528
Operating segment | North America
Segment Information
Total revenues	106,300	104,865	314,932	318,793
Operating income from continuing operations before amortization and restructuring charges	10,430	8,506	28,011	25,104
Operating segment | Other
Segment Information
Total revenues	706	833	1,927	2,575
Operating income from continuing operations before amortization and restructuring charges	79	44	212	162
Inter-segment
Segment Information
Total revenues	(707)	(1,520)	(2,714)	(3,864)
Corporate expenses
Segment Information
Operating income from continuing operations before amortization and restructuring charges	(9,448)	(12,596)	(31,123)	(29,489)
Segment reconciling items
Segment Information
Operating income from continuing operations before amortization and restructuring charges	2,883	531	8,977	11,305
Amortization of intangible assets	(65)	0	(132)	0
Restructuring charges	$ (21,244)	$ (14,000)	$ (22,650)	$ (14,953)