Note 9 - Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2014

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

	June 30, 2014		December 31, 2013
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