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Disclosures about Fair Value of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Mar. 27, 2024 | Dec. 31, 2023
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Disclosures about Fair Value of Assets and Liabilities |  |  |
Mortgage loans in process of securitization | $ 142,629 |  | $ 110,599
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 1,061,288 |  | 1,113,687
Loans held for sale | 84,513 |  | 86,663
Servicing rights | 172,200 |  | 158,457
Derivative assets |  | $ 0 |
Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Mortgage loans in process of securitization | 142,629 |  | 110,599
Loans held for sale | 84,513 |  | 86,663
Servicing rights | 172,200 |  | 158,457
Recurring | Interest rate lock commitments |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 174 |  | 140
Derivative liabilities | 22 |  | 4
Recurring | Forward contracts |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 9 |  | 4
Derivative liabilities | 110 |  | 391
Recurring | Interest rate swaps |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 3,985 |  | 2,610
Recurring | Interest rate swaps (back-to-back) |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 15,259 |  | 12,426
Derivative liabilities | 15,259 |  | 12,426
Recurring | Put Option |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 33,490 |  | 25,877
Recurring | Interest Rate Floor |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 8,910 |  | 6,576
Level 2 | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Mortgage loans in process of securitization | 142,629 |  | 110,599
Loans held for sale | 84,513 |  | 86,663
Level 2 | Recurring | Forward contracts |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 9 |  | 4
Derivative liabilities | 110 |  | 391
Level 2 | Recurring | Interest rate swaps |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 3,985 |  | 2,610
Level 2 | Recurring | Interest rate swaps (back-to-back) |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 15,259 |  | 12,426
Derivative liabilities | 15,259 |  | 12,426
Level 2 | Recurring | Put Option |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 10,514 |  | 7,223
Level 3 | Interest rate lock commitments |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 174 |  | 140
Derivative liabilities | 22 |  | 4
Level 3 | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Servicing rights | 172,200 |  | 158,457
Level 3 | Recurring | Interest rate lock commitments |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 174 |  | 140
Derivative liabilities | 22 |  | 4
Level 3 | Recurring | Put Option |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 22,976 |  | 18,654
Level 3 | Recurring | Interest Rate Floor |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Derivative assets | 8,910 |  | 6,576
Treasury notes |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 109,103 |  | 128,968
Treasury notes | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 109,103 |  | 128,968
Treasury notes | Level 1 | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 109,103 |  | 128,968
Federal agencies |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 238,501 |  | 247,755
Federal agencies | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 238,501 |  | 247,755
Federal agencies | Level 2 | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 238,501 |  | 247,755
Mortgage-backed - Government Agency ("Agency") |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 13,044 |  | 14,467
Mortgage-backed - Government Agency ("Agency") | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 13,044 |  | 14,467
Mortgage-backed - Government Agency ("Agency") | Level 2 | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 13,044 |  | 14,467
Mortgage-backed - Non-Agency residential |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 472,192 |  | 485,500
Mortgage-backed - Non-Agency residential | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 472,192 |  | 485,500
Mortgage-backed - Non-Agency residential | Level 3 | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 472,192 |  | 485,500
Mortgage-backed - Agency - fair value option |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 228,448 |  | 236,997
Mortgage-backed - Agency - fair value option | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | 228,448 |  | 236,997
Mortgage-backed - Agency - fair value option | Level 2 | Recurring |  |  |
Disclosures about Fair Value of Assets and Liabilities |  |  |
Securities available for sale ($700,640 and $722,497 utilizing fair value option, respectively) | $ 228,448 |  | $ 236,997

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