Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment
Property, Plant and Equipment, Gross	$ 1,312,601	$ 1,233,188
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(563,944)	(515,662)
Total Property, Plant and Equipment, Net	748,657	717,526
Land [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Gross	58,047	58,072
Building and Building Improvements [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Gross	326,743	317,636
Machinery and Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Gross	413,411	386,504
Computer Software, Intangible Asset [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Gross	$ 514,400	$ 470,976