Note 6 - Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

(in thousands)	September 30, 2018		December 31, 201 7
Employee related expenses	$	5,270	$	4,317
Investment banking fees		1,750		—
Royalties		1,035		1,419
Other accrued liabilities		2,134		2,071
Total accrued liabilities	$	10,189	$	7,807