Property, Plant and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment
Property, Plant and Equipment, Gross	$ 933,150	$ 849,426
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(418,712)	(380,005)
Total Property, Plant and Equipment, Net	514,438	469,421
Land [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Gross	56,214	54,804
Building and Building Improvements [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Gross	212,277	206,744
Machinery and Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Gross	361,978	340,834
Computer Software, Intangible Asset [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Gross	$ 302,681	$ 247,044