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SEGMENT REPORTING AND REVENUE (Tables) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Schedule of operating segment results | The following tables present the Company’s operating segment results for the years ended December 31, (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Wholesale Banking | ​ | Consumer Banking | ​ | Corporate Other (1) (2) | ​ | Total
2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net interest income | ​ | $ | 270,985 | ​ | $ | 253,846 | ​ | $ | 86,182 | ​ | $ | 611,013
Provision for credit losses | ​ |  | 34,229 | ​ | ​ | (2,616) | ​ | ​ | 5 | ​ | ​ | 31,618
Net interest income after provision for credit losses | ​ |  | 236,756 | ​ | ​ | 256,462 | ​ | ​ | 86,177 | ​ | ​ | 579,395
Noninterest income | ​ |  | 36,791 | ​ | ​ | 51,347 | ​ | ​ | 2,739 | ​ | ​ | 90,877
Noninterest expenses | ​ |  | 165,499 | ​ | ​ | 227,158 | ​ | ​ | 37,714 | ​ | ​ | 430,371
Income before income taxes | ​ | $ | 108,048 | ​ | $ | 80,651 | ​ | $ | 51,202 | ​ | $ | 239,901
2022 (3) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net interest income | ​ | $ | 301,803 | ​ | $ | 222,787 | ​ | $ | 59,671 | ​ | $ | 584,261
Provision for credit losses | ​ |  | 11,758 | ​ | ​ | 7,231 | ​ | ​ | 39 | ​ | ​ | 19,028
Net interest income after provision for credit losses | ​ |  | 290,045 | ​ | ​ | 215,556 | ​ | ​ | 59,632 | ​ | ​ | 565,233
Noninterest income | ​ |  | 36,557 | ​ | ​ | 56,899 | ​ | ​ | 25,067 | ​ | ​ | 118,523
Noninterest expenses | ​ |  | 159,033 | ​ | ​ | 218,939 | ​ | ​ | 25,830 | ​ | ​ | 403,802
Income before income taxes | ​ | $ | 167,569 | ​ | $ | 53,516 | ​ | $ | 58,869 | ​ | $ | 279,954
2021 (3) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net interest income | ​ | $ | 300,440 | ​ | $ | 223,140 | ​ | $ | 27,680 | ​ | $ | 551,260
Provision for credit losses | ​ |  | (34,877) | ​ | ​ | (26,011) | ​ | ​ | — | ​ | ​ | (60,888)
Net interest income after provision for credit losses | ​ |  | 335,317 | ​ | ​ | 249,151 | ​ | ​ | 27,680 | ​ | ​ | 612,148
Noninterest income | ​ |  | 26,263 | ​ | ​ | 72,747 | ​ | ​ | 26,796 | ​ | ​ | 125,806
Noninterest expenses | ​ |  | 144,482 | ​ | ​ | 220,357 | ​ | ​ | 54,356 | ​ | ​ | 419,195
Income before income taxes | ​ | $ | 217,098 | ​ | $ | 101,541 | ​ | $ | 120 | ​ | $ | 318,759
(1) For the years ended December 31, 2021 and 2022, noninterest expenses include $17.4 million and $5.5 million, respectively, in strategic branch closing and facility consolidation costs. (2) For the year ended December 31, 2023, noninterest expenses include $12.6 million ($9.8 million included within other expenses and $2.8 million included within salaries and benefits), in expenses associated with strategic cost saving initiatives, principally composed of severance costs related to headcount reductions, costs related to modifying certain third-party vendor contracts, and charges for exiting certain leases. (3) As discussed above, the segment operating results for the years ended December 31, 2022 and 2021 include a reallocation from Consumer Banking to Wholesale Banking.
Schedule of operating segment results - balance sheet metrics | The following table presents the Company’s operating segment results for key balance sheet metrics as of December 31, (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Wholesale Banking | ​ | Consumer Banking | ​ | Corporate Other | ​ | Total
2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
LHFI, net of deferred fees and costs (1) | ​ | $ | 12,688,833 | ​ | $ | 2,958,811 | ​ | $ | (12,601) | ​ | $ | 15,635,043
Goodwill | ​ | ​ | 639,180 | ​ | ​ | 286,031 | ​ | ​ | — | ​ | ​ | 925,211
Deposits | ​ | ​ | 6,403,432 | ​ | ​ | 9,816,562 | ​ | ​ | 598,135 | ​ | ​ | 16,818,129
2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
LHFI, net of deferred fees and costs (1)(2) | ​ | $ | 11,476,258 | ​ | $ | 2,990,017 | ​ | $ | (17,133) | ​ | $ | 14,449,142
Goodwill(3) | ​ | ​ | 639,180 | ​ | ​ | 286,031 | ​ | ​ | — | ​ | ​ | 925,211
Deposits(4) | ​ | ​ | 6,128,729 | ​ | ​ | 9,724,598 | ​ | ​ | 78,350 | ​ | ​ | 15,931,677
(1) Corporate Other includes acquisition accounting fair value adjustments (2) Wholesale Banking includes a $136.6 million reallocation from Consumer Banking due to the January 1, 2023 organizational change discussed above. (3) Wholesale Banking includes a $9.6 million reallocation from Consumer Banking due to the January 1, 2023 organizational change discussed above. (4) Wholesale Banking includes a $258.7 million reallocation from Consumer Banking due to the January 1, 2023 organizational change discussed above.
Schedule of Disaggregation of Revenue | Noninterest income disaggregated by major source for the years ended December 31, consisted of the following (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2023 | ​ | 2022 | ​ | 2021
Noninterest income: |  | ​ |  |  | ​ |  |  | ​ |
Service charges on deposit accounts (1): |  | ​ |  |  | ​ |  |  | ​ |
Overdraft fees | ​ | $ | 20,045 | ​ | $ | 18,749 | ​ | $ | 17,126
Maintenance fees & other | ​ |  | 13,195 | ​ |  | 11,303 | ​ |  | 9,996
Other service charges, commissions, and fees (1) | ​ |  | 7,860 | ​ |  | 6,765 | ​ |  | 6,595
Interchange fees (1) | ​ |  | 9,678 | ​ |  | 9,110 | ​ |  | 8,279
Fiduciary and asset management fees (1): | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Trust asset management fees | ​ |  | 12,396 | ​ |  | 12,720 | ​ |  | 12,571
Registered advisor management fees | ​ |  | — | ​ |  | 5,088 | ​ |  | 9,856
Brokerage management fees | ​ |  | 5,299 | ​ |  | 4,606 | ​ |  | 5,135
Mortgage banking income | ​ |  | 2,743 | ​ |  | 7,085 | ​ |  | 21,022
(Loss) gain on sale of securities | ​ | ​ | (40,989) | ​ | ​ | (3) | ​ | ​ | 87
Bank owned life insurance income | ​ |  | 11,759 | ​ |  | 11,507 | ​ |  | 11,488
Loan-related interest rate swap fees | ​ |  | 10,037 | ​ |  | 12,174 | ​ |  | 5,620
Other operating income (2)(3)(4) | ​ |  | 38,854 | ​ |  | 19,419 | ​ |  | 18,031
Total noninterest income | ​ | $ | 90,877 | ​ | $ | 118,523 | ​ | $ | 125,806
(1) Income within scope of ASC 606, Revenue from Contracts with Customers. (2) Includes a $5.1 million gain on sale of Visa, Inc. Class B common stock for the year ended December 31, 2021. (3) Includes a $9.1 million gain related to the sale of DHFB for the year ended December 31, 2022. (4) Includes a $29.6 million gain related to the sale-leaseback transactions for the year ended December 31, 2023.
Disaggregated noninterest income by segment | The following tables present noninterest income disaggregated by reportable operating segment for the years ended December 31, (dollars in thousands): ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Wholesale Banking | ​ | Consumer Banking | ​ | Corporate Other(1)(2)(3) | ​ | Total
2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Noninterest income: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Service charges on deposit accounts | ​ | $ | 8,562 | ​ | $ | 24,678 | ​ | $ | — | ​ | $ | 33,240
Other service charges and fees | ​ | ​ | 1,654 | ​ | ​ | 6,206 | ​ | ​ | — | ​ | ​ | 7,860
Fiduciary and asset management fees | ​ | ​ | 12,117 | ​ | ​ | 5,578 | ​ | ​ | — | ​ | ​ | 17,695
Mortgage banking income | ​ | ​ | — | ​ | ​ | 2,743 | ​ | ​ | — | ​ | ​ | 2,743
Other income | ​ | ​ | 14,458 | ​ | ​ | 12,142 | ​ | ​ | 2,739 | ​ | ​ | 29,339
Total noninterest income | ​ | $ | 36,791 | ​ | $ | 51,347 | ​ | $ | 2,739 | ​ | $ | 90,877
2022 (4) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Noninterest income: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Service charges on deposit accounts | ​ | $ | 6,814 | ​ | $ | 23,238 | ​ | $ | — | ​ | $ | 30,052
Other service charges and fees | ​ | ​ | 1,769 | ​ | ​ | 4,996 | ​ | ​ | — | ​ | ​ | 6,765
Fiduciary and asset management fees | ​ | ​ | 12,424 | ​ | ​ | 9,990 | ​ | ​ | — | ​ | ​ | 22,414
Mortgage banking income | ​ | ​ | — | ​ | ​ | 7,085 | ​ | ​ | — | ​ | ​ | 7,085
Other income | ​ | ​ | 15,550 | ​ | ​ | 11,590 | ​ | ​ | 25,067 | ​ | ​ | 52,207
Total noninterest income | ​ | $ | 36,557 | ​ | $ | 56,899 | ​ | $ | 25,067 | ​ | $ | 118,523
2021 (4) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Noninterest income: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Service charges on deposit accounts | ​ | $ | 6,009 | ​ | $ | 21,113 | ​ | $ | — | ​ | $ | 27,122
Other service charges and fees | ​ | ​ | 1,684 | ​ | ​ | 4,911 | ​ | ​ | — | ​ | ​ | 6,595
Fiduciary and asset management fees | ​ | ​ | 12,280 | ​ | ​ | 15,282 | ​ | ​ | — | ​ | ​ | 27,562
Mortgage banking income | ​ | ​ | — | ​ | ​ | 21,022 | ​ | ​ | — | ​ | ​ | 21,022
Other income | ​ | ​ | 6,290 | ​ | ​ | 10,419 | ​ | ​ | 26,796 | ​ | ​ | 43,505
Total noninterest income | ​ | $ | 26,263 | ​ | $ | 72,747 | ​ | $ | 26,796 | ​ | $ | 125,806
(1) For the year ended December 31, 2021, other income primarily includes a $5.1 million gain on the sale of Visa Inc. Class B common stock, income from BOLI, and equity method investment income. (2) For the year ended December 31, 2022, other income primarily includes a $9.1 million gain related to the sale of DHFB, income from BOLI, and equity method investment income. (3) For the year ended December 31, 2023, other income primarily includes a $29.6 million gain related to the sale-leaseback transactions, a $41.0 million loss incurred on the sale of AFS securities, and income from BOLI. (4) As discussed above, noninterest income for the years ended December 31, 2022 and 2021 includes a reallocation from Consumer Banking to Wholesale Banking.

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