Note 7 - Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	2019		2018
Accrued legal and professional fees	$	1,889	$	1,305
Accrued payroll and related costs		2,795		2,871
Accrued contract manufacturing costs		5,114		2,516
Accrued clinical trial costs		1,489		2,318
Accrued consulting costs		1,117		862
Other		699		661
Accrued expenses	$	13,103	$	10,533