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Note 8 - Derivative Instruments and Hedging Activities - Notional or Contractual Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Notional or contractual amount $ 2,877 $ 3,109
Derivative financial assets 63 116
Derivative liabilities 0 0
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]    
Notional or contractual amount 2,877 3,109
Derivative financial assets 63 116
Derivative liabilities $ 0 $ 0