Property and Equipment, Net - Property and Equipment Table (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 346,310	$ 337,950
Less: Accumulated depreciation	171,990	160,480
Property and equipment, net	174,320	177,470
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,890	14,710
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	63,310	60,570
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 269,110	$ 262,670