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Securities Held-to-Maturity - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) bond | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Schedule of Held-to-Maturity Securities [Line Items] |  |  |
Held-to-maturity securities, face value | $ 230,012 | $ 230,495 |
Interest income (including the amortization of discount) | 15,900 | 13,600 | $ 18,600
APL certificates |  |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |  |
Held-to-maturity securities, face value | 192,791 | $ 192,791 |
Amount purchased at a discount | $ 119,000 |  |
Weighted average variable interest rate (as a percent) | 3.94% |  |
Estimated weighted average remaining maturity period | 6 years 3 months 18 days |  |
Weighted average fixed interest rate | 8.84% | 8.85% |
After five years through ten years | $ 192,800 |  |
APL certificates | Minimum |  |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |  |
Securities maturity term | 5 years |  |
APL certificates | Maximum |  |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |  |
Securities maturity term | 10 years |  |
Seven B Piece Bonds |  |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |  |
Estimated weighted average remaining maturity period | 13 years 1 month 6 days |  |
Bonds retained percentage | 49.00% |  |
Initial face value of bonds purchased | $ 106,200 |  |
Number of B Piece bonds | bond | 7 |  |
Discounted value of bonds purchased | $ 74,700 |  |
Held-to-maturity securities sold, percentage | 51.00% |  |
Agency B Piece Bonds |  |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |  |
Weighted average variable interest rate (as a percent) | 3.74% |  |
Weighted average effective interest rate | 11.76% | 11.28% |
After ten years | $ 37,200 |  |

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