Segment Reporting (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
Segment Reporting [Abstract]
Number of operating segments			4
Number of reportable segments			1
Revenues from External Customers
Net Sales	$ 215,404	$ 219,084	$ 401,144	$ 403,063
Americas
Revenues from External Customers
Net Sales	161,429	153,698	295,432	276,087
Europe, Middle East and Africa
Revenues from External Customers
Net Sales	33,741	41,273	68,388	84,336
Asia Pacific
Revenues from External Customers
Net Sales	$ 20,234	$ 24,113	$ 37,324	$ 42,640