Note 8 - Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Schedule of maturities of operating lease liabilities

(In thousands)
Years ending December 31:
2021	$	98
2022		41
Total lease payments		139
Less imputed interest		(29)
Total	$	110

Schedule future minimum lease and royalty payments

(In thousands)
Years ending December 31:
2021	$	5,297
2022		5,709
2023		5,720
2024		5,719
2025		5,719
Thereafter		12,352
Total minimum payments	$	40,516