Summary of Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment
Construction in progress	$ 1,453	$ 1,560
Asset Retirement Obligations
ARO included in other liabilities and accrued expenses	1,397	1,540
Amount of assets associated with AROs not fully depreciated	404
Amount spent on AROs	193	124
Accretion expense recognized on AROs	51	55
Other Assets
Intangible assets		7
Deferred financing costs	136	181
Other	109	114
Total	245	302
Amortization expense	7	22	128
Accumulated amortization, netted against the intangible assets	946	939
Environmental Expenditures
Capital expenditures related to environmental matters	428	407	787
Minimum
Asset Retirement Obligations
Estimated annual expenditures in years 2013 through 2017 relating to AROs	100
Maximum
Asset Retirement Obligations
Estimated annual expenditures in years 2013 through 2017 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