DEPOSITS - Schedule of Composition of Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deposits [Abstract]
Noninterest-bearing demand deposits	$ 3,659,421	$ 2,719,907
Interest-bearing transaction deposits	3,119,475	2,423,237
Saving deposits and money market deposits	5,697,172	3,348,711
Time deposits	2,429,890	1,490,635
Total deposits	14,905,958	9,982,490
Brokered interest-bearing transaction deposits	50,136	0
Brokered savings deposits and money market deposits	10,000	6,002
Brokered time deposits	10,004	7,088
Total time deposits with a minimum denomination of $100,000	1,674,862	860,193
Total time deposits with a minimum denomination that meets or exceeds the FDIC insurance limit of $250,000	$ 876,207	$ 334,503