Note 8 - Accrued Expenses

6 Months Ended

Jun. 30, 2014

Payables and Accruals [Abstract]

Accounts Payable and Accrued Liabilities Disclosure [Text Block]

8. Accrued Expenses

Accrued expenses consist of the following:

	June 30, 2014		December 31, 2013
Payroll and benefits	$	1,815,786	$	2,728,616
Clinical trial costs		1,218,510		882,651
Professional fees		442,740		383,231
Research grants		605,132		610,498
Restructuring costs		16,208		24,638
Other		776,791		908,247
Total	$	4,875,167	$	5,537,881