Note 7 - Accrued Expenses (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

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

	March 31,		December 31,
	2019		2018
Accrued contract manufacturing costs	$	2,946	$	2,516
Accrued clinical trial costs		1,817		2,318
Accrued payroll and related costs		1,411		2,871
Accrued consulting and service fee expenses		847		1,229
Accrued legal and professional fees		1,529		1,191
Other		954		408
Accrued expenses	$	9,504	$	10,533