Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Segment Reporting [Abstract]
Number of operating segments	4
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 173,712	$ 172,591
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	111,413	108,142
Europe, Middle East, Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	43,804	45,610
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 18,495	$ 18,839