v3.26.1
LOANS AND LEASES, NET - Nonaccrual (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Sep. 30, 2025
Financing Receivable, Nonaccrual [Line Items]    
Total gross loans and leases $ 5,107,841 $ 4,664,908
Nonaccrual Loans    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0 221
Year two 119,502 5,988
Year three 9,402 31,045
Year four 65,100 3,469
Year five 1,380 14,420
Prior 19,024 655
Revolving Loans and Leases 40,957 25,618
Total gross loans and leases 255,365 81,416
Nonaccrual with No ACL 34,954 24,167
Nonaccrual Loans | National Lending | Term lending    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0 0
Year two 119,502 1,383
Year three 2,217 23,220
Year four 51,824 3,469
Year five 1,380 10,887
Prior 14,936 0
Revolving Loans and Leases 0 0
Total gross loans and leases 189,859 38,959
Nonaccrual with No ACL 17,490 18,072
Nonaccrual Loans | National Lending | Asset-based lending    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0 0
Year two 0 0
Year three 0 0
Year four 0 0
Year five 0 0
Prior 0 0
Revolving Loans and Leases 22,771 24,327
Total gross loans and leases 22,771 24,327
Nonaccrual with No ACL 11,895 2,110
Nonaccrual Loans | National Lending | Factoring    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0 0
Year two 0 0
Year three 0 0
Year four 0 0
Year five 0 0
Prior 0 0
Revolving Loans and Leases 18,186 1,291
Total gross loans and leases 18,186 1,291
Nonaccrual with No ACL 0 0
Nonaccrual Loans | National Lending | Lease financing    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0 0
Year two 0 0
Year three 0 150
Year four 0 0
Year five 0 3,511
Prior 3,945 607
Revolving Loans and Leases 0 0
Total gross loans and leases 3,945 4,268
Nonaccrual with No ACL 3,468 3,985
Nonaccrual Loans | National Lending | SBA/USDA    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0 221
Year two 0 4,605
Year three 7,185 7,675
Year four 12,867 0
Year five 0 22
Prior 143 48
Revolving Loans and Leases 0 0
Total gross loans and leases 20,195 12,571
Nonaccrual with No ACL 1,692 0
Nonaccrual Loans | National Lending | Other commercial finance    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0  
Year two 0  
Year three 0  
Year four 409  
Year five 0  
Prior 0  
Revolving Loans and Leases 0  
Total gross loans and leases 409  
Nonaccrual with No ACL 409  
Nonaccrual Loans | National Lending | Commercial finance    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0 221
Year two 119,502 5,988
Year three 9,402 31,045
Year four 65,100 3,469
Year five 1,380 14,420
Prior 19,024 655
Revolving Loans and Leases 40,957 25,618
Total gross loans and leases 255,365 81,416
Nonaccrual with No ACL 34,954 24,167
90 or More Days Delinquent and Accruing    
Financing Receivable, Nonaccrual [Line Items]    
Year one 3,809 4,655
Year two 1,293 4,620
Year three 11,536 6,013
Year four 1,589 848
Year five 341 14
Prior 1,141 1,574
Revolving Loans and Leases 0 0
Total gross loans and leases 19,709 17,724
90 or More Days Delinquent and Accruing | Total loans and leases held for investment    
Financing Receivable, Nonaccrual [Line Items]    
Year one 3,809 4,134
Year two 1,293 3,785
Year three 11,536 5,863
Year four 1,589 833
Year five 341 14
Prior 1,141 1,574
Revolving Loans and Leases 0 0
Total gross loans and leases 19,709 16,203
90 or More Days Delinquent and Accruing | National Lending | Loans held for sale    
Financing Receivable, Nonaccrual [Line Items]    
Year one   521
Year two   835
Year three   150
Year four   15
Year five   0
Prior   0
Revolving Loans and Leases   0
Total gross loans and leases   1,521
90 or More Days Delinquent and Accruing | National Lending | Term lending    
Financing Receivable, Nonaccrual [Line Items]    
Year one 0 0
Year two 0 2,942
Year three 11,187 0
Year four 1,553 0
Year five 0 0
Prior 888 1,478
Revolving Loans and Leases 0 0
Total gross loans and leases 13,628 4,420
90 or More Days Delinquent and Accruing | National Lending | Lease financing    
Financing Receivable, Nonaccrual [Line Items]    
Year one   277
Year two   0
Year three   0
Year four   789
Year five   1
Prior   0
Revolving Loans and Leases   0
Total gross loans and leases   1,067
90 or More Days Delinquent and Accruing | National Lending | SBA/USDA    
Financing Receivable, Nonaccrual [Line Items]    
Year one 355 1,139
Year two 979 495
Year three 172 5,683
Year four 0 0
Year five 328 0
Prior 249 96
Revolving Loans and Leases 0 0
Total gross loans and leases 2,083 7,413
90 or More Days Delinquent and Accruing | National Lending | Commercial finance    
Financing Receivable, Nonaccrual [Line Items]    
Year one 355 1,416
Year two 979 3,437
Year three 11,359 5,683
Year four 1,553 789
Year five 328 1
Prior 1,137 1,574
Revolving Loans and Leases 0 0
Total gross loans and leases 15,711 12,900
90 or More Days Delinquent and Accruing | National Lending | Consumer finance    
Financing Receivable, Nonaccrual [Line Items]    
Year one 3,454 241
Year two 314 348
Year three 177 180
Year four 36 44
Year five 13 13
Prior 4 0
Revolving Loans and Leases 0 0
Total gross loans and leases $ 3,998 826
90 or More Days Delinquent and Accruing | National Lending | Tax services    
Financing Receivable, Nonaccrual [Line Items]    
Year one   2,477
Year two   0
Year three   0
Year four   0
Year five   0
Prior   0
Revolving Loans and Leases   0
Total gross loans and leases   $ 2,477