Property and Equipment, Net - Property and Equipment Table (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 430,980	$ 372,640
Less: Accumulated depreciation	216,650	200,690
Property and equipment, net	214,330	171,950
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,110	15,580
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	84,880	69,800
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 326,990	$ 287,260