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PORTFOLIO LOANS - Schedule of Financial Instruments Owned and Pledged as Collateral (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged loans | $ 7,913,686 | $ 7,559,294
Asset Pledged as Collateral |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged loans | 5,570,806 | 5,588,395
FHLB |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged loans | 4,820,332 | 4,865,481
Federal Reserve Bank |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Pledged loans | $ 750,474 | $ 722,914

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