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Derivative Instruments and Hedging Activities - Cash Flow Derivatives (Details) - Cash flow hedge - Designated as Hedging Instrument - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Cash Flow Hedging Derivatives |  |  |
Amount expected to be reclassified from AOCI into earnings | $ 8,100 |  |
Interest Rate Swap |  |  |
Cash Flow Hedging Derivatives |  |  |
Notional Amount | $ 183,000 |  | $ 183,000
Weighted Average Pay Rate | 2.00% |  | 2.00%
Weighted Average Receive Rate | 5.48% |  | 5.48%
Weighted average maturity | 3 years 9 months 14 days |  | 4 years 14 days
Net Unrealized Gain | $ 6,756 |  | $ 5,271
Interest Rate Cap |  |  |
Cash Flow Hedging Derivatives |  |  |
Notional Amount | $ 125,000 |  | $ 125,000
Weighted average maturity | 6 years 1 month 6 days |  | 6 years 4 months 2 days
Unamortized Premium Paid | $ 4,885 |  | $ 5,081
Weighted Average Strike Rate | 0.96% |  | 0.96%
Amortization of interest rate cap premiums | $ 196 | $ 198 |

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