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DEPOSITS (Tables) | 12 Months Ended
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Dec. 31, 2024
Deposits, Interest-bearing and Noninterest-bearing, Alternative [Abstract] |
Schedule of Deposits by Type | The following table presents the deposit balances as of December 31, (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2024 |  | 2023
Deposits: |  | ​ |  |  | ​ |
Interest checking accounts | ​ | $ | 5,494,550 | ​ | $ | 4,697,819
Money market accounts | ​ |  | 4,291,097 | ​ |  | 3,850,679
Savings accounts | ​ |  | 1,025,896 | ​ |  | 909,223
Customer time deposits of $250,000 and over | ​ |  | 1,202,657 | ​ |  | 674,939
Other customer time deposits | ​ |  | 2,888,476 | ​ |  | 2,173,904
Time Deposits | ​ |  | 4,091,133 | ​ |  | 2,848,843
Total interest-bearing customer deposits | ​ |  | 14,902,676 | ​ |  | 12,306,564
Brokered deposits (1) | ​ |  | 1,217,895 | ​ |  | 548,384
Total interest-bearing deposits | ​ | $ | 16,120,571 | ​ | $ | 12,854,948
Demand deposits | ​ |  | 4,277,048 | ​ | ​ | 3,963,181
Total Deposits | ​ | $ | 20,397,619 | ​ | $ | 16,818,129
(1) Includes time deposits of $751.0 million and $378.1 million as of December 31, 2024 and 2023, respectively.
Scheduled Maturities of Time Deposits | ​ The following table presents the scheduled maturities of time deposits as of December 31, 2024 (dollars in thousands): ​
​ | ​ | ​ | ​
2025 | ​ |  | 4,211,605
2026 | ​ |  | 541,335
2027 | ​ |  | 60,829
2028 | ​ |  | 13,626
2029 | ​ | ​ | 12,317
Thereafter | ​ |  | 2,450
Total scheduled maturities of time deposits | ​ | $ | 4,842,162

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