Note 11 - Accrued Expenses (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	March 31,		December 31,
	2016		2015
Compensation and related expenses	$	2,072	$	3,082
Facility construction costs		2,069		415
Research grants		397		381
Professional fees		372		210
Clinical trial costs		123		252
Other		966		438
Total	$	5,999	$	4,778