Note 12 - Commitments and Contingencies - Operating Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating lease cost	$ 566	$ 149
Variable lease cost	0	0
Operating lease expense	566	149
Short-term lease rent expense	0	0
Total rent expense	566	149
Operating cash flows from operating leases	$ 143	$ 113
Weighted-average remaining lease term – operating leases (in years) (Year)	2 years 4 months 17 days	2 years 1 month 24 days
Weighted-average discount rate – operating leases	12.00%	12.00%