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DEPOSITS (Tables) | 12 Months Ended
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Dec. 31, 2022
Deposits, Interest-bearing and Noninterest-bearing, Alternative [Abstract] |
Schedule of Deposits by Type | The major types of interest-bearing deposits are as follows for the years ended December 31, (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2022 |  | 2021
Interest-bearing deposits: |  | ​ |  |  | ​ |
NOW accounts | ​ | $ | 4,186,505 | ​ | $ | 4,176,032
Money market accounts | ​ |  | 3,922,536 | ​ |  | 4,249,858
Savings accounts | ​ |  | 1,130,899 | ​ |  | 1,121,297
Time deposits of $250,000 and over | ​ |  | 405,060 | ​ |  | 452,193
Other time deposits | ​ |  | 1,403,438 | ​ |  | 1,404,364
Total interest-bearing deposits | ​ | $ | 11,048,438 | ​ | $ | 11,403,744
Demand deposits | ​ | ​ | 4,883,239 | ​ | ​ | 5,207,324
Total deposits | ​ | $ | 15,931,677 | ​ | $ | 16,611,068
​
Scheduled Maturities of Time Deposits | As of December 31, 2022, the scheduled maturities of time deposits are as follows for the years ended December 31, (dollars in thousands): ​
​ | ​ | ​ | ​
2023 |  | $ | 1,199,381
2024 | ​ |  | 384,440
2025 | ​ |  | 167,690
2026 | ​ |  | 27,693
2027 | ​ |  | 28,085
Thereafter | ​ |  | 1,209
Total scheduled maturities of time deposits | ​ | $ | 1,808,498
​

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