Note 2 - Liquidity (Detail) (USD $)	0 Months Ended	1 Months Ended		3 Months Ended		12 Months Ended
	Feb. 05, 2013	Feb. 28, 2013	Aug. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011
Cash and Cash Equivalents, at Carrying Value				$ 646,000	$ 2,188,000	$ 2,536,000			$ 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				(257,000)	(735,000)
Working Capital				3,780,000
Proceeds from Issuance of Private Placement						2,000,000	7,213,000	5,304,000
Line of Credit Facility, Increase, Additional Borrowings (in Dollars)	1,000,000	1,000,000	1,000,000
Line of Credit Facility, Amount Outstanding				$ 2,000,000