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MERGERS AND ACQUISITIONS - Schedule of Pre-tax Acquisition Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Business Combination [Line Items]
Pre-tax acquisition expenses	$ 7,251	$ 1,935	$ 95,449	$ 4,432
M&M
Business Combination [Line Items]
Pre-tax acquisition expenses	0	597	108	2,947
CrossFirst
Business Combination [Line Items]
Pre-tax acquisition expenses	$ 7,251	$ 1,338	95,341	$ 1,485
Adjustment to the initial provision for unfunded commitments			$ 4,000

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