Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 216,623	$ 201,162
Less accumulated depreciation and amortization	(140,991)	(117,050)
Property, plant and equipment, net	75,632	84,112
Depreciation and amortization	20,423	17,843	$ 11,063
Future machinery and equipment purchase commitments	832	3,266
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,442	1,442
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	15,908	15,418
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	178,131	167,090
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 21,142	$ 17,212