DEPOSITS - Summary of Deposit Balances (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Deposits, by Type [Abstract] | ||
| Non-interest-bearing deposit accounts | $ 5,554,751 | $ 5,549,416 |
| Interest-bearing checking accounts | 3,545,690 | 3,512,649 |
| Interest-bearing saving accounts | 3,505,401 | 3,452,192 |
| Time deposits | 3,482,968 | 3,562,331 |
| Brokered certificates of deposits ("CDs") | 507,011 | 593,555 |
| Total deposits | $ 16,595,821 | $ 16,670,143 |
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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest-bearing domestic third-party deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest-bearing domestic checking deposit liabilities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest-bearing domestic time deposits. Time deposits bear interest for a fixed, stated period of time and include certificate of deposits and individual retirement accounts. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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