Property and Equipment, Net - Property and Equipment Table (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 371,010	$ 357,260
Less: Accumulated depreciation	189,010	176,130
Property and equipment, net	182,000	181,130
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,040	14,820
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	69,390	67,790
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 286,580	$ 274,650