Note 7 - Accrued Expenses (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

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

	March 31,		December 31,
	2020		2019
Accrued legal and professional fees	$	1,783	$	1,889
Accrued payroll and related costs		1,241		2,795
Accrued contract manufacturing costs		1,906		5,114
Accrued clinical trial costs		1,805		1,489
Accrued consulting costs		554		1,117
Other		1,094		699
Accrued expenses	$	8,383	$	13,103