Property and Equipment, Net - Property and Equipment Table (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 361,430	$ 357,260
Less: Accumulated depreciation	181,760	176,130
Property and equipment, net	179,670	181,130
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,840	14,820
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	68,970	67,790
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 277,620	$ 274,650