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Note 15 - Derivatives and Hedging Activities - Derivatives (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Asset-Backed Securities [Member] |  |  |  |
Derivative, fair value |  | $ 1,400 |  | $ 1,100
Closed Portfolio of Loans Receivable [Member] |  |  |  |
Derivative, fair value |  | 1,600 |  |
Designated as Hedging Instrument [Member] |  |  |  |
Derivative, carrying amount |  | 153,012 |  | 51,054
Derivative, fair value |  | 3,012 |  | 1,054
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Asset-Backed Securities [Member] |  |  |  |
Derivative, carrying amount |  | 51,433 | [1] | 51,054
Derivative, fair value |  | 1,433 | [1] | $ 1,054
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Closed Portfolio of Loans Receivable [Member] |  |  |  |
Derivative, carrying amount | [2] | 101,579 |  |
Derivative, fair value | [2] | $ 1,579 |  |
[1] | These amounts include the amortized cost basis of a closed portfolio of AFS securities used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolio anticipated to be outstanding for the designated hedged period. At September 30, 2024 and December 31, 2023, the amortized cost basis of the closed portfolio used in this hedging relationship was $56.8 million and $57.4 million, respectively; the cumulative basis adjustments associated with this hedging relationship was $1.4 million and $1.1 million, respectively; and the amount of the designated hedged items was $50.0 million for both periods.
[2] | These amounts include the amortized cost basis of a closed portfolio of loans receivable used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolio anticipated to be outstanding for the designated hedged period. At September 30, 2024, the amortized cost basis of the closed portfolio used in this hedging relationship was $283.2 million, the cumulative basis adjustments associated with this hedging relationship was $1.6 million, and the amount of the designated hedged items was $100.0 million. No prior year end information is provided as this hedging relationship was initiated in 2024.

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