Note 9 - Fair Value Measurement (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Impairment of Collateral Dependent Loans	$ 271,000	$ 0
Fair Value, Nonrecurring [Member]
Assets, Fair Value Disclosure			$ 0