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No definition available.

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at amortized cost (held-to-maturity).

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- Definition

Indicates line item in statement of financial position that includes accrued interest, after allowance for credit loss, on investment in debt security measured at amortized cost (held-to-maturity).

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Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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INVESTMENT SECURITIES - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
INVESTMENT SECURITIES - Narrative (Details) - USD ($)	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Available for sale securities, at fair value	$ 2,240,834,000		$ 2,240,834,000		$ 1,783,551,000
Cost of security transferred	0	$ 0	0	$ 0
Held-to-maturity, at amortized cost	$ 1,571,547,000		$ 1,571,547,000		$ 1,554,015,000
Debt securities, held-to-maturity, accrued interest, after allowance for credit loss, statement of financial position [Extensible Enumeration]	Other assets		Other assets		Other assets
Accrued interest receivable	$ 39,600,000		$ 39,600,000		$ 41,600,000
Traditional securities
Debt Securities, Available-for-Sale [Line Items]
Available for sale securities, at fair value	2,034,532,000		2,034,532,000		1,580,049,000
Held-to-maturity, at amortized cost	441,428,000		441,428,000		476,950,000
Traditional securities \| Federal Home Loan Bank Advances \| Asset Pledged as Collateral
Debt Securities, Available-for-Sale [Line Items]
Available for sale securities, at fair value	1,490,000,000		1,490,000,000
Traditional securities \| Federal Home Loan Bank Advances \| Asset Pledged as Collateral without Right
Debt Securities, Available-for-Sale [Line Items]
Held to maturity, at fair value	381,500,000		381,500,000
Property Assessed Clean Energy ("PACE") assessments
Debt Securities, Available-for-Sale [Line Items]
Available for sale securities, at fair value	206,302,000		206,302,000		203,502,000
Held-to-maturity, at amortized cost	1,130,119,000		1,130,119,000		$ 1,077,065,000
Property Assessed Clean Energy ("PACE") assessments \| External Credit Rating, Noninvestment Grade
Debt Securities, Available-for-Sale [Line Items]
Held-to-maturity, at amortized cost	$ 7,000,000.0		$ 7,000,000.0