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BORROWINGS - FHLB and FRB Advances (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Instrument [Line Items] |  |
FHLB advances | $ 1,025,000 |
Amount |  |
2024 | 0 |
2025 | 200,000 |
2026 | 200,000 |
2027 | 450,000 |
2028 | 100,000 |
Thereafter | 75,000 |
FHLB advances | $ 1,025,000 |
Rate |  |
2024 | 0 |
2025 | 4.45% |
2026 | 4.32% |
2027 | 3.70% |
2028 | 4.19% |
Thereafter | 6.05% |
Total maximum borrowing capacity with the FHLB | $ 3,345,182 | $ 3,474,347
Total maximum borrowing capacity with the FRB | 4,283,486 | 3,436,000
Qualifying loans and securities serving as collateral against FHLB and FRB advances | 12,215,920 | 11,889,120
Qualifying Assets Pledged as Collateral |  |
Rate |  |
Qualifying loans and securities serving as collateral against FHLB and FRB advances | 9,481,379 | 8,575,137
FHLB advances |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ 1,018,349 | $ 1,203,207
FHLB advances, rate | 4.19% | 3.91%
Unamortized basis adjustments from interest rate swaps designated as fair value hedges of long-term advances from FHLB | $ (6,700) | $ 3,200
FHLB Advance Due March 2028 |  |
Debt Instrument [Line Items] |  |
FHLB advances | 950,000 |
Amount |  |
FHLB advances | 950,000 |
FHLB Advance Due June 2029 |  |
Debt Instrument [Line Items] |  |
FHLB advances | 75,000 |
Amount |  |
FHLB advances | $ 75,000 |

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