Note 9 - Stockholders' Equity (Details) (USD $)	0 Months Ended		1 Months Ended					6 Months Ended			6 Months Ended		0 Months Ended	6 Months Ended
	May 30, 2013	Feb. 26, 2013	Jun. 30, 2013	Jun. 03, 2013	Feb. 25, 2013	Feb. 28, 2013	Aug. 31, 2011	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2013 Reverse Stock Split [Member]	Jun. 30, 2013 Convertible Common Stock [Member]	Feb. 22, 2013 Series A Convertible Preferred Stock (Member)	Jun. 30, 2013 Series A Convertible Preferred Stock (Member)	Jun. 30, 2013 Redeemable Convertible Preferred Stock [Member]
Note 9 - Stockholders' Equity (Details) [Line Items]
Proceeds from Issuance or Sale of Equity (in Dollars)		$ 15,000,000						$ 400,000
Stock Issued During Period, Shares, New Issues	6,264,492				5,381,670							137,032	15,000.00422	15,000.00422
Aggregate Offering Price (in Dollars)						25,000,000
Proceeds from Issuance of Common Stock (in Dollars)					6,800,000			15,640,213
Commission on Proceeds from ATM Shares, Percent					3.00%
Legal Fees (in Dollars)					50,000
Convertible Preferred Stock, Shares Reserved for Future Issuance		12,072,438
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)		6,036,219	2,100,000					2,100,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)		1.18	2.42					2.42		3.37
Warrants and Rights Outstanding (in Dollars)									5,400,000
Dividends Payable, Current (in Dollars)									4,600,000
Conversion of Stock, Shares Converted							5,000	12,072,438
Stock Issued During Period, Value, New Issues (in Dollars)	9,800,000
Class of Warrant or Right, Outstanding (in Shares)	6,294,674		13,828,622					13,828,622		7,863,653
Common Stock, Shares Authorized	75,000,000		75,000,000					75,000,000		75,000,000
Reclassification From Equity to Liability (in Dollars)			9,100,000	9,100,000
Proceeds from Issuance of Redeemable Convertible Preferred Stock (in Dollars)								$ 13,616,442			$ 5,100,000
Temporary Equity, Shares Issued															5,000
Preferred Stock, Dividend Rate, Percentage															8.00%
Preferred Stock, Par or Stated Value Per Share (in Dollars per share)			$ 0.01					$ 0.01		$ 0.01					$ 1,000
Convertible Preferred Stock, Shares Issued upon Conversion															416.6667