Note 12 - Derivatives and Risk Management Activities - Amounts Recorded in Statement of Financial Condition (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Other Assets [Member] | Best Efforts Forward Loan sales Commitments [Member]
Derivative Asset, Fair Value	$ 114	$ 5
Derivative Asset, Notional Amount	5,930	3,222
Other Assets [Member] | Mandatory Forward Loan Sales Commitments [Member]
Derivative Asset, Fair Value	94	5
Derivative Asset, Notional Amount	5,187	1,667
Other Assets [Member] | Interest Rate Lock Commitments [Member]
Derivative Asset, Fair Value	38	378
Derivative Asset, Notional Amount	2,464	14,419
Other Liabilities [Member] | Best Efforts Forward Loan sales Commitments [Member]
Derivative Liability, Fair Value	6	96
Derivative Liability, Notional Amount	479	11,197
Other Liabilities [Member] | Mandatory Forward Loan Sales Commitments [Member]
Derivative Liability, Fair Value	5	44
Derivative Liability, Notional Amount	804	6,460
Other Liabilities [Member] | Interest Rate Lock Commitments [Member]
Derivative Liability, Fair Value	60	0
Derivative Liability, Notional Amount	$ 3,945	$ 0