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Fair Value - Fair Value Measurement (Detail) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assumed Gain From Loan Sale | $ 9,003 |  |
Interest Rate Movement Effect | 14,326 |  |
Servicing Rights Value | 33,683 |  |
Security Price Change | (11,422) |  |
Total Fair Value Measurement | 45,590 | $ 17,616 |
Mortgage Banking | Level 2 | Fair Value, Recurring | Rate Lock Commitments |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value disclosure, off-balance sheet risks, face amount, liability | 2,005,358 |  |
Assumed Gain From Loan Sale | 6,319 |  |
Interest Rate Movement Effect | 12,771 |  |
Servicing Rights Value | 27,714 |  |
Total Fair Value Measurement | 46,804 |  |
Mortgage Banking | Level 2 | Fair Value, Recurring | Forward Sales Contracts |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value disclosure, off-balance sheet risks, face amount, liability | 2,076,492 |  |
Security Price Change | (11,422) |  |
Total Fair Value Measurement | (11,422) |  |
Mortgage Banking | Level 2 | Fair Value, Recurring | Mortgages Held for Sale |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assumed Gain From Loan Sale | 2,684 |  |
Interest Rate Movement Effect | 1,555 |  |
Servicing Rights Value | 5,969 |  |
Total Fair Value Measurement | 10,208 |  |
Fair Value, principal amount, loans held for sale | $ 405,766 |  | $ 352,489

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