Note 6 - Liabilities Related to Sale of Future Royalties (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Deferred Revenue, by Arrangement, Disclosure [Table Text Block]

Total liability related to sale of future royalties, start of period	$	11,522
Non-cash royalty revenue paid to HCRP		(71	)
Non-cash interest expense recognized		340
Total liability related to sale of future royalties, end of period		11,791
Current portion		(836	)
Long-term portion	$	10,955