Note 9 - Accrued Liabilities (Details) - Other Accrued Liabilities (USD $)	Jun. 30, 2014	Dec. 31, 2013
Other Accrued Liabilities [Abstract]
Amounts due to contract research organizations and other contractual agreements	$ 1,221,577	$ 1,711,934
Accrued payroll and related benefits	536,408	900,434
Accrued professional fees	13,885	63,500
Accrued interest on notes payable	81,250
Other	20,000	31,785
Total accrued liabilities	$ 1,873,120	$ 2,707,653