Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Information
Total revenues	$ 192,601	$ 211,306	$ 592,550	$ 643,963
Amortization of intangible assets	(55)	(65)	(162)	(132)
Restructuring charges	(1,002)	(21,244)	(1,738)	(22,650)
Operating income (loss) from continuing operations	1,588	(18,426)	10,417	(13,805)
Operating segment | International
Segment Information
Total revenues	82,837	105,007	268,819	329,818
Operating income (loss) from continuing operations	4,556	1,822	16,194	11,877
Operating segment | North America
Segment Information
Total revenues	110,031	106,300	324,423	314,932
Operating income (loss) from continuing operations	10,266	10,430	30,649	28,011
Other
Segment Information
Total revenues	838	706	2,459	1,927
Operating income (loss) from continuing operations	48	79	173	212
Inter-segment
Segment Information
Total revenues	(1,105)	(707)	(3,151)	(2,714)
Corporate expenses
Segment Information
Operating income (loss) from continuing operations	(12,225)	(9,448)	(34,699)	(31,123)
Corporate expenses and operating segments
Segment Information
Operating income (loss) from continuing operations	2,645	2,883	12,317	8,977
Segment reconciling items
Segment Information
Amortization of intangible assets	(55)	(65)	(162)	(132)
Restructuring charges	$ (1,002)	$ (21,244)	$ (1,738)	$ (22,650)