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Investment Securities - Contractual Maturities of Investment Securities - Held-to-maturity Securities (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Held-to-maturity, Amortized Cost |  |
Due after one year through five years | $ 25,428 |
Due after five years through ten years | 23,647 |
Due after ten years | 43,788 |
Total held to maturity securities, amortized cost | 92,863 | $ 95,505
Held-to-maturity, Fair Value |  |
Due after one year through five years | 23,212 |
Due after five years through ten years | 20,555 |
Due after ten years | 35,964 |
Total held to maturity securities, fair value | $ 79,731 | $ 79,532
Weighted average remaining life | 6 years | 6 years 8 months 12 days

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