Note 2 - Liquidity (Details) (USD $)	0 Months Ended	1 Months Ended		6 Months Ended		12 Months Ended					0 Months Ended
	Feb. 05, 2013	Feb. 28, 2013	Aug. 31, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012		Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011	Aug. 02, 2013 Subsequent Event [Member]
Note 2 - Liquidity (Details) [Line Items]
Cash and Cash Equivalents, at Carrying Value				$ 1,313,000	$ 1,651,000	$ 2,536,000	[1]			$ 2,914,000
Line of Credit Facility, Remaining Borrowing Capacity				1,000,000
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)			3,000,000	3,000,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest				(660,000)	(1,323,000)
Working Capital				3,587,000
Proceeds from Issuance of Private Placement						2,000,000		7,213,000	5,304,000
Proceeds from Lines of Credit (in Dollars)	1,000,000	1,000,000	1,000,000								1,000,000
Line of Credit Facility, Amount Outstanding				$ 2,000,000

[1] Derived from the audited December 31, 2012 financial statements