Quarterly report [Sections 13 or 15(d)]

SEGMENT REPORTING AND REVENUE (Disaggregation of Noninterest Expense by Reportable Operating Segment) (Details)

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SEGMENT REPORTING AND REVENUE (Disaggregation of Noninterest Expense by Reportable Operating Segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disaggregation of Noninterest Expenses        
Salaries and benefits $ 113,978 $ 108,319 $ 339,700 $ 293,676
Occupancy expenses 13,089 13,582 39,153 34,944
Technology and data processing 17,492 17,009 49,110 44,444
Furniture and equipment expenses 5,604 6,536 16,691 16,794
Loan-related expenses 2,544 1,933 8,118 4,461
Other expenses 51,626 91,067 160,507 258,008
Total noninterest expenses 204,333 238,446 613,279 652,327
Operating segments | Wholesale Banking        
Disaggregation of Noninterest Expenses        
Salaries and benefits 33,783 30,979 100,817 84,586
Occupancy expenses 456 418 1,224 1,064
Technology and data processing 2,307 1,138 5,929 3,364
Furniture and equipment expenses 98 103 262 229
Loan-related expenses 642 386 2,039 247
Other expenses 55,655 59,958 167,414 143,297
Total noninterest expenses 92,941 92,982 277,685 232,787
Operating segments | Consumer Banking        
Disaggregation of Noninterest Expenses        
Salaries and benefits 28,797 27,892 84,483 77,666
Occupancy expenses 8,236 8,056 24,960 20,755
Technology and data processing 438 504 1,115 1,075
Furniture and equipment expenses 1,601 1,204 4,870 3,494
Loan-related expenses 1,018 1,436 3,922 3,271
Other expenses 67,901 69,758 199,272 168,671
Total noninterest expenses 107,991 108,850 318,622 274,932
Corporate Other        
Disaggregation of Noninterest Expenses        
Salaries and benefits 51,398 49,448 154,400 131,424
Occupancy expenses 4,397 5,108 12,969 13,125
Technology and data processing 14,747 15,367 42,066 40,005
Furniture and equipment expenses 3,905 5,229 11,559 13,071
Loan-related expenses 884 111 2,157 943
Other expenses (71,930) (38,649) (206,179) (53,960)
Total noninterest expenses $ 3,401 $ 36,614 $ 16,972 $ 144,608