Note 9 - Other Income (Expense) - Schedule of Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Interest income	$ 623	$ 1	$ 1,066	$ 25
Interest expense	0	(78)	0	(331)
Realized gain on disposal of equipment	0	(44)	70	0
Total other income (expense)	$ 623	$ (121)	$ 1,136	$ (306)