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Note 10 - Derivative Instruments and Hedging Activities - Notional or Contractual Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Notional or contractual amount $ 3,773 $ 3,983
Derivative assets 204 199
Derivative liabilities 0 0
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]    
Notional or contractual amount 3,773 3,983
Derivative assets 204 199
Derivative liabilities $ 0 $ 0