Note 10 - Leases - Future Minimum Lease Payments (Details) $ in Thousands	Sep. 30, 2022 USD ($)
2022	$ 52
2023	174
2024	60
Total minimum lease payments	286
Less imputed interest	(6)
Accounts Payable and Accrued Liabilities and Other Noncurrent Liabilities [Member]
Total operating lease liability	280
Accounts Payable and Accrued Liabilities [Member]
Accounts payable and accrued liabilities	200
Other Noncurrent Liabilities [Member]
Other long-term liabilities	$ 80