Summary of Significant Accounting Policies - PP&E, ARO and Other (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment
Construction in progress	$ 4,113	$ 3,157
Interest costs capitalized	0	0
Asset Retirement Obligations
ARO included in other liabilities and accrued expenses	2,058	1,261
Amount of assets associated with AROs not fully depreciated	1,041
Amount spent on AROs	140	113
Accretion expense recognized on AROs	60	57	$ 61
Other Assets
Deferred financing costs	63	45
Other	97	100
Total	160	145
Environmental Expenditures
Capital expenditures related to environmental matters	455	$ 1,038	$ 395
Minimum
Asset Retirement Obligations
Estimated annual expenditures in years 2015 through 2019 relating to AROs	100
Maximum
Asset Retirement Obligations
Estimated annual expenditures in years 2015 through 2019 relating to AROs	$ 200
Buildings and building improvements | Minimum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	3 years
Buildings and building improvements | Maximum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	20 years
Machinery and equipment | Minimum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	2 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	20 years
Furniture and fixtures | Minimum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	10 years
Automotive equipment. | Minimum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	3 years
Automotive equipment. | Maximum
Property, Plant and Equipment
Estimated useful lives of property, plant and equipment	10 years