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Derivative Financial Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Derivatives and other information |  |
Changes in fair value of loan swaps | $ 0 |
Other assets |  |
Derivatives and other information |  |
Cash collateral | 0 | $ 0
Interest rate swaps on loans | Cash flow hedges |  |
Derivatives and other information |  |
Notional amount | 25,000 | 25,000
Derivative Asset | 1,521 | 1,415
Matched interest rate swap with borrower | Not designated as hedges |  |
Derivatives and other information |  |
Notional amount | 109,255 | 109,638
Derivative Asset | 785 | 1,611
Derivative Liability | 5,502 | 4,499
Matched interest rate swap with counterparty | Not designated as hedges |  |
Derivatives and other information |  |
Notional amount | 109,255 | 109,638
Derivative Asset | 5,502 | 4,499
Derivative Liability | 785 | 1,611
IRLC | Not designated as hedges |  |
Derivatives and other information |  |
Notional amount | 55,759 | 26,152
Derivative Asset | 740 | 335
Mortgage Banking | Best-efforts forward sales contracts |  |
Derivatives and other information |  |
IRLCs | 55,760 | 26,150
Impaired loans, Unpaid Principal Balance | 24,510 | 14,440
Mortgage loans | $ 80,270 | $ 40,590

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