Note 7 - Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

(in thousands)	June 30 , 201 8		December 31, 201 7
Employee related expenses	$	6,020	$	6,162
Royalties		741		1,419
Professional services		520		346
Rent		503		238
Clinical trials		192		688
Other accrued liabilities		1,778		2,281
Total accrued liabilities	$	9,754	$	11,134