Note 10 - Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2015

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	June 30,  2015		December 31,  2014
Compensation and related expenses	$	2,260,469	$	2,791,935
Professional fees		742,319		553,630
Clinical trial costs		421,502		508,042
Research grants		492,001		539,053
Other		525,494		354,866
Total	$	4,441,785	$	4,747,526