ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary of Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Noninterest income - net realized losses on sales of available for sale securities	$ 0	$ (9,114)	$ (8)	$ (9,165)
Income tax expense	(8,516)	(7,160)	(24,680)	(18,052)
NET INCOME	56,765	49,187	168,936	137,053
Amount Reclassified from Accumulated Other Comprehensive Loss
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
NET INCOME	0	(7,200)	(6)	(7,240)
Amount Reclassified from Accumulated Other Comprehensive Loss | Unrealized gains (losses) on available for sale securities
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Noninterest income - net realized losses on sales of available for sale securities	0	(9,114)	(8)	(9,165)
Income tax expense	$ 0	$ 1,914	$ 2	$ 1,925