Note 5 - Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Operating lease right-of-use assets, net	$ 1,065	$ 590
Current lease liabilities	968	596
Non-current leases	143	0
Lease liabilities	1,111	596
Office Leases [Member]
Operating lease right-of-use assets, net	1,065	590
Current lease liabilities	968	596
Non-current leases	$ 143	$ 0