Note 8 - Income Taxes - Schedule of Summary of Operating Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023	$ 45,830
2024	50,140
2025	17,266
2026	7,648
2027 and thereafter	145,275
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 266,159