Note 2 - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Money market	$ 10,025,484	$ 10,014,243
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Money market
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Money market
Money Market Funds [Member]
Money market	$ 10,025,484	$ 10,014,243
Warrant [Member] | Fair Value, Inputs, Level 1 [Member]
Warrants to purchase common stock
Warrant [Member] | Fair Value, Inputs, Level 2 [Member]
Warrants to purchase common stock
Warrant [Member] | Fair Value, Inputs, Level 3 [Member]
Warrants to purchase common stock	$ 412,318	$ 418,530
Warrant [Member]
Warrants to purchase common stock	412,318	418,530
Fair Value, Inputs, Level 1 [Member]
Money market	$ 10,025,484	$ 10,014,243
Warrants to purchase common stock
Fair Value, Inputs, Level 2 [Member]
Money market
Warrants to purchase common stock
Fair Value, Inputs, Level 3 [Member]
Money market
Warrants to purchase common stock	$ 412,318	$ 418,530
Money market	10,025,484	10,014,243
Warrants to purchase common stock	$ 412,318	$ 418,530