Note 7 - Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2012	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 7 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill		$ 0	$ 0	$ 5,200,000
Goodwill, Impairment Loss	5,200,000
Impairment of Intangible Assets, Finite-lived		148,000	148,000
Finite-Lived Intangible Assets, Net		1,418,000	1,703,000
Solar Power [Member]
Note 7 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill				$ 4,700,000