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LOW INCOME HOUSING TAX CREDIT AND COMMUNITY REINVESTMENT ACT INVESTMENTS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
LIHTC
Investment Program, Proportional Amortization Method, Elected [Line Items]
Current balance of investment	$ 45.4		$ 45.4		$ 14.6
Remaining unfunded commitments related to investments	1.1		1.1		1.1
CRA
Investment Program, Proportional Amortization Method, Elected [Line Items]
Current balance of investment	77.9		77.9		$ 55.9
Bank recognized dividend income on investments	$ 2.3	$ 1.6	$ 3.3	$ 2.4

X

- Definition

Amount of investment that generates income tax credit and other income tax benefit under tax credit program elected to be accounted for using proportional amortization method. Includes, but is not limited to, investment under program not meeting condition for accounting under proportional amortization method.

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