Note 7 - Other Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	Year E nded December 31,
	2016		2015
Amounts due to contract research organizations and other contractual agreements	$	1,115,193	$	571,615
Accrued payroll and related benefits		1,066,751		947,078
Accrued professional fees		259,550		319,200
Accrued interest on notes payable		22,241		62,136
Other		20,021		19,740
Total	$	2,483,756	$	1,919,769