ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Total Allowance For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Loans and Leases
Beginning balance	$ 186,304	$ 198,253	$ 195,281	$ 186,126	$ 186,126
Charge-offs	(12,353)		(48,020)
Charge-offs		(23,101)		(52,532)
Recoveries	3,267	3,916	13,272	10,521
Charge-offs arising from transfer of loans to held for sale	(826)		(9,481)
Provision (release)	6,838	18,422	32,178	53,375
Ending balance	183,230	197,490	183,230	197,490	195,281
HTM Securities
Beginning balance	6	7	7	8	8
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Charge-offs arising from transfer of loans to held for sale	0		0
Provision (release)	0	0	(1)	(1)
Ending balance	6	7	6	7	7
Other Accounts Receivable
Beginning balance	2,811	0	0	0	0
Charge-offs	(1,019)	0	(2,840)	0
Recoveries	748	0	748	0
Charge-offs arising from transfer of loans to held for sale	0		0
Provision (release)	(272)	0	4,360	0
Ending balance	2,268	0	2,268	0	0
Total
Beginning balance	189,121	198,260	195,288	186,134	186,134
Charge-offs	(13,372)	(23,101)	(50,860)	(52,532)
Recoveries	4,015	3,916	14,020	10,521
Charge-offs arising from transfer of loans to held for sale	(826)		(9,481)
Provision (release)	6,566	18,422	36,537	53,374
Ending balance	$ 185,504	$ 197,497	$ 185,504	$ 197,497	$ 195,288