Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Land and land improvements	$ 6,520	$ 10,538
Building and improvements	47,775	59,377
Machinery and equipment	234,336	219,408
Construction in progress	4,112	7,859
Property, plant, and equipment, gross	292,743	297,182
Less: accumulated depreciation	(173,811)	(167,607)
Property, plant, and equipment, net	$ 118,932	$ 129,575