Note 7 - Loans Receivable and Allowance for Credit Losses - Alloowance for Credit Losses on Off Balance Sheet Commitments (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
ACL on off-balance sheet commitments	$ 604
ACL on off-balance sheet commitments, provision	$ 7
Previously Reported [Member]
ACL on off-balance sheet commitments		$ 0
Revision of Prior Period, Accounting Standards Update, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
ACL on off-balance sheet commitments		$ 597