Property, Plant and Equipment (Detail Textuals) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 134,000	$ 119,000
Depreciation and amortization expense	169,000	153,000
CPG
Property, Plant and Equipment [Line Items]
Construction in progress	537,000		477,000
ATG
Property, Plant and Equipment [Line Items]
Construction in progress	537,000		477,000
Land and building | Elma
Property, Plant and Equipment [Line Items]
Nominal amount of capital lease	5,000,000
Buildings
Property, Plant and Equipment [Line Items]
Accumulated amortization	2,714,000		2,682,000
Amortization expense	$ 32,000	$ 32,000