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LOAN SERVICING RIGHTS - Schedule of Carrying Value of Loan Servicing Rights Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
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Servicing Assets at Fair Value [Line Items] |  |  |  |
Total loan servicing rights | $ 174,269 | $ 174,652 |  |
Residential mortgage |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Total loan servicing rights | 171,968 | 171,915 | $ 149,986 | $ 147,014
SBA |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Total loan servicing rights | $ 2,301 | $ 2,737 | $ 3,166 | $ 3,443

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