Note 8 - Property, Plant and Equipment (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Note 8 - Property, Plant and Equipment (Details) [Line Items]
Property, Plant and Equipment, Net	$ 18,288,000		$ 18,288,000		$ 18,754,000
Capital Leased Assets, Gross	6,000,000		6,000,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	200,000		200,000
Depreciation	300,000	300,000	568,000	556,000
PV Solar Systems_Aerojet 1 [Member]
Note 8 - Property, Plant and Equipment (Details) [Line Items]
Property, Plant and Equipment, Net	$ 14,900,000		$ 14,900,000