Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net revenues [Abstract]
Total	$ 101,886	$ 107,158
Operating segment income (loss) [Abstract]
Operating income (loss)	(4,977)	1,740
Interest expense, net	(815)	(1,069)
Income (loss) from continuing operations before income taxes	(5,792)	671
Americas [Member]
Net revenues [Abstract]
Total	73,167	82,574
Operating segment income (loss) [Abstract]
Operating income (loss)	8,527	11,842
Europe [Member]
Net revenues [Abstract]
Total	23,566	19,872
Operating segment income (loss) [Abstract]
Operating income (loss)	1,522	(181)
Asia Pacific [Member]
Net revenues [Abstract]
Total	10,053	9,706
Operating segment income (loss) [Abstract]
Operating income (loss)	581	347
Intersegment Revenue Elimination [Member]
Net revenues [Abstract]
Total	(4,900)	(4,994)
Corporate [Member]
Operating segment income (loss) [Abstract]
Operating income (loss)	$ (15,607)	$ (10,268)