Note 3 - Fair Value of Financial Instruments (Details) - Black-Scholes model to measure accrued warrant liability and stock options: (USD $)	12 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Minimum [Member]	Dec. 31, 2012 Minimum [Member]	Jun. 30, 2013 Maximum [Member]	Dec. 31, 2012 Maximum [Member]
Note 3 - Fair Value of Financial Instruments (Details) - Black-Scholes model to measure accrued warrant liability and stock options: [Line Items]
Stock Price (in Dollars per share)	$ 1.58	$ 1.58	$ 1.33
Exercise Price (in Dollars per share)		$ 1.60	$ 1.60	$ 5.00	$ 5.00
Term in years		306 days	1 year 32 days	2 years 58 days	2 years 149 days
Volatility	80.80%	68.47%	82.75%	87.18%	95.91%
Annual rate of quarterly dividends	0.00%	0.00%	0.00%
Discount rate- bond equivalent yield		0.13%	0.17%	0.40%	0.29%