DEPOSITS - Summary of Deposit Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Deposits, by Type [Abstract]
Non-interest-bearing deposit accounts	$ 5,374,894	$ 5,547,538
Interest-bearing checking accounts	3,853,088	4,308,116
Interest-bearing saving accounts	3,509,500	3,530,382
Time deposits	3,495,256	3,007,144
Brokered CDs	628,309	478,118
Total deposits	$ 16,861,047	$ 16,871,298

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
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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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).

+ References

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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.

+ References

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- Definition

Amount of interest-bearing domestic checking deposit liabilities.

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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.

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- Definition

The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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