Note 11 - Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	June 30, 2019		December 31, 2018
Compensation and related expenses	$	3,584	$	4,446
Professional fees		1,609		1,989
Operating lease liability - current		1,101		-
Income taxes payable		757		385
Research grants		398		400
Clinical trial costs		320		577
Other		332		349
Total	$	8,101	$	8,146