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FAIR VALUE MEASURES - Difference Between Fair Value and Principal Balance of Loans Held for Sale Measured at Fair Value (Details) - Mortgage loans held for sale - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Aggregate fair value of mortgage loans held for sale | $ 545,388 | $ 528,599
Aggregate unpaid principal balance of loans held for sale | 534,583 | 525,071
Past-due loans of 90 days or more | 467 | 0
Nonaccrual loans | 467 | 0
Unpaid principal balance of nonaccrual loans | $ 462 | $ 0

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