Note 9 - Accrued Expenses (Tables)

9 Months Ended

Sep. 30, 2014

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

	September 30, 2014		December 31, 2013
Labor and related expenses	$	2,842,234	$	2,870,147
Clinical trial costs		962,031		882,651
Professional fees		382,423		383,231
Research grants		562,558		610,498
Restructuring costs		11,909		24,638
Other		492,538		766,716
Total	$	5,253,693	$	5,537,881