Note 7 - Other Accrued Liabilities (Detail) - Other Accrued Liabilities (USD $)	Mar. 31, 2013	Dec. 31, 2012
Amounts due to Contract Research Organizations and other contractual agreements	$ 801,696	$ 827,989
Accrued payroll and related benefits	163,063	338,365
Accrued professional fees	78,900	37,400
Other	53,786	51,225
Total	$ 1,097,445	$ 1,254,979