Property and Equipment, Net - Property and Equipment Table (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 434,500	$ 430,980
Less: Accumulated depreciation	223,540	216,650
Property and equipment, net	210,960	214,330
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,560	19,110
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	85,820	84,880
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 329,120	$ 326,990