Number of financial instruments impacted by credit loss.

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Provision for credit losses available for sale.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with interest rate reset through auction process, sold at par value.

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- Definition

Amount of writeoff of allowance for credit loss on 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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Amount excluding accrued interest, of allowance for credit loss on 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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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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Amount of realized gain on 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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Amount of realized loss on 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

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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SECURITIES - Additional Information (Details) - USD ($)	3 Months Ended			9 Months Ended
SECURITIES - Additional Information (Details) - USD ($)	Sep. 30, 2025	Jun. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Schedule Of Available For Sale Securities
Investment securities available-for-sale	$ 1,555,139,000			$ 1,555,139,000		$ 1,313,885,000
Securities available-for-sale				663,000,000	$ 747,800,000
Debt securities, available-for-sale, realized gain				5,900,000	1,400,000
Debt securities, available-for-sale, realized loss					200,000
Provision (reversal) for credit losses - securities AFS	(17,000)		$ (43,000)	(139,000)	(921,000)
Charge-offs related to interest -only strip securities		$ 3,400,000			0
Allowance for credit losses	634,000	651,000	7,299,000	634,000	7,299,000	4,134,000	$ 7,342,000	$ 8,220,000
Federal funds purchased \| Asset pledged as collateral
Schedule Of Available For Sale Securities
Investment securities available-for-sale	818,000,000			818,000,000		916,800,000
Repurchase agreements \| Asset pledged as collateral
Schedule Of Available For Sale Securities
Investment securities available-for-sale	72,500,000			72,500,000		77,300,000
Agency mortgage-backed securities
Schedule Of Available For Sale Securities
Investment securities available-for-sale	871,951,000			871,951,000		1,121,626,000
Agency mortgage-backed securities \| Asset pledged as collateral
Schedule Of Available For Sale Securities
Investment securities available-for-sale	262,900,000			262,900,000		256,500,000
Agency mortgage-backed securities \| Federal funds purchased \| Asset pledged as collateral
Schedule Of Available For Sale Securities
Investment securities available-for-sale	384,800,000			384,800,000		325,700,000
Agency mortgage-backed securities \| Noninvestment Grade
Schedule Of Available For Sale Securities
Investment securities available-for-sale	673,000			673,000
U.S. Treasury
Schedule Of Available For Sale Securities
Investment securities available-for-sale	999,000			999,000		678,000
U.S. Treasury \| Asset pledged as collateral
Schedule Of Available For Sale Securities
Investment securities available-for-sale	1,900,000			1,900,000		1,300,000
Corporate bonds
Schedule Of Available For Sale Securities
Investment securities available-for-sale	118,727,000			118,727,000		125,817,000
Provision (reversal) for credit losses - securities AFS	(85,000)		(19,000)	$ (191,000)	(581,000)
Number of financial instruments impacted by credit loss				12
Allowance for credit losses	566,000	$ 651,000	$ 821,000	$ 566,000	$ 821,000	$ 757,000	$ 840,000	$ 1,402,000
Corporate bonds \| Noninvestment Grade
Schedule Of Available For Sale Securities
Investment securities available-for-sale	$ 32,600,000			$ 32,600,000