Segment Reporting (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Segment Reporting [Abstract]
Number of operating segments			4
Number of reportable segments			1
Revenues from External Customers
Net Sales	$ 204,802	$ 202,643	$ 605,946	$ 605,706
Americas
Revenues from External Customers
Net Sales	148,947	142,149	444,379	418,236
Europe, Middle East and Africa
Revenues from External Customers
Net Sales	34,525	40,610	102,913	124,946
Asia Pacific
Revenues from External Customers
Net Sales	$ 21,330	$ 19,884	$ 58,654	$ 62,524