Property, Plant and Equipment (Detail Textuals) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Depreciation	$ 119,000	$ 113,000
Depreciation and amortization	153,000	147,000
Buildings
Property, Plant and Equipment [Line Items]
Accumulated amortization	2,584,000		2,552,000
Amortization expense	32,000	32,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Amortization expense	$ 0	$ 21,000