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FAIR VALUE - Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Total gains (losses): |  |  |  |
Proceeds from principal repayments and maturities of available-for-sale debt securities |  |  | $ 1,134,582 | $ 530,232
Other Debt Obligations [Member] |  |  |  |
Total gains (losses): |  |  |  |
Proceeds from principal repayments and maturities of available-for-sale debt securities |  |  | 500 |
Available-for-Sale Securities [Member] | Fair Value Inputs Level 3 [Member] |  |  |  |
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |  |  |
Beginning balance | $ 5,857 | $ 7,099 | 6,815 | 6,200
Total gains (losses): |  |  |  |
Included in other comprehensive income (unrealized) | (72) | 178 | 219 | 592
Included in earnings (unrealized) | (146) | 36 | (138) | 45
Purchases | 0 | 0 | 0 | 1,000
Principal repayments and amortization | (228) | (425) | (1,485) | (949)
Ending balance | $ 5,411 | $ 6,888 | $ 5,411 | $ 6,888

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