Note 6 - Other Accrued Liabilities (Detail) - Other Accrued Liabilities (USD $)	Dec. 31, 2012	Dec. 31, 2011
Amounts due to Contract Research Organizations and other contractual agreements	$ 827,989	$ 1,234,875
Accrued payroll and related benefits	338,365	632,425
Accrued professional fees	37,400	137,400
Other	51,225	27,234
Total	$ 1,254,979	$ 2,031,934