Note 11 - Accrued Expenses (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	March 31, 2018		December 31, 2017
Compensation and related expenses	$	2,844	$	2,893
Clinical trial costs		2,402		2,318
Revenue reserves and accrued expenses related to product recall		1,381		-
Research grants		431		419
Professional fees		676		448
Other		229		248
Total	$	7,963	$	6,326