v3.26.1
LOANS AND LEASES, NET - Allowance for Loan Losses and Recorded Investment in Loans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2025
Allowance for Credit Losses [Roll Forward]          
Beginning Balance     $ 53,319    
Ending Balance $ 109,780   109,780   $ 53,319
Total loans and leases          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 98,279 $ 102,890 53,319 $ 71,765 71,765
Provision (Reversal) 27,530 9,231 76,114 63,002  
Charge-offs (18,712) (10,036) (38,886) (42,764)  
Recoveries 2,683 3,910 19,233 13,992  
Ending Balance 109,780 105,995 109,780 105,995 53,319
Unfunded commitments          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 1,186 851 924 695 695
Provision (Reversal) 779 47 1,041 203  
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Ending Balance 1,965 898 1,965 898 924
Total          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 99,465 103,741 54,243 72,460 72,460
Provision (Reversal) 28,309 9,278 77,155 63,205  
Charge-offs (18,712) (10,036) (38,886) (42,764)  
Recoveries 2,683 3,910 19,233 13,992  
Ending Balance 111,745 106,893 111,745 106,893 54,243
National Lending | Term lending          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 33,744 26,219 28,345 30,394 30,394
Provision (Reversal) 13,486 3,514 23,712 12,187  
Charge-offs (6,178) (1,333) (14,439) (15,916)  
Recoveries 419 976 3,853 2,711  
Ending Balance 41,471 29,376 41,471 29,376 28,345
National Lending | Asset-based lending          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 11,969 2,030 7,650 1,356 1,356
Provision (Reversal) 7,445 5,844 17,834 6,690  
Charge-offs (8,617) (539) (14,702) (711)  
Recoveries 19 0 34 0  
Ending Balance 10,816 7,335 10,816 7,335 7,650
National Lending | Factoring          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 4,974 4,934 4,319 5,757 5,757
Provision (Reversal) 9,392 516 9,928 (421)  
Charge-offs (1,490) (464) (1,490) (634)  
Recoveries 29 391 148 675  
Ending Balance 12,905 5,377 12,905 5,377 4,319
National Lending | Lease financing          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 838 1,243 1,040 1,189 1,189
Provision (Reversal) 232 219 4 1,346  
Charge-offs 0 (344) (37) (1,426)  
Recoveries 29 12 92 21  
Ending Balance 1,099 1,130 1,099 1,130 1,040
National Lending | Insurance premium finance          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance       0 0
Provision (Reversal)       91  
Charge-offs       (93)  
Recoveries       2  
Ending Balance   0   0  
National Lending | SBA/USDA          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 4,235 4,021 4,807 3,273 3,273
Provision (Reversal) 3,276 1,427 5,144 3,033  
Charge-offs (124) (421) (2,581) (1,327)  
Recoveries 23 1 40 49  
Ending Balance 7,410 5,028 7,410 5,028 4,807
National Lending | Other commercial finance          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 36 384 90 607 607
Provision (Reversal) 64 (195) 10 (418)  
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Ending Balance 100 189 100 189 90
National Lending | Commercial finance          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 55,796 38,831 46,251 42,576 42,576
Provision (Reversal) 33,895 11,325 56,632 22,508  
Charge-offs (16,409) (3,101) (33,249) (20,107)  
Recoveries 519 1,380 4,167 3,458  
Ending Balance 73,801 48,435 73,801 48,435 46,251
National Lending | Consumer finance          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 6,589 29,635 6,422 28,669 28,669
Provision (Reversal) (373) 2,613 2,437 17,597  
Charge-offs (1,303) (6,381) (4,637) (21,362)  
Recoveries 285 600 976 1,563  
Ending Balance 5,198 26,467 5,198 26,467 6,422
National Lending | Tax services          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 35,289 33,781 0 2 2
Provision (Reversal) (6,035) (4,728) 17,043 22,751  
Charge-offs (1,000) (554) (1,000) (1,295)  
Recoveries 1,879 1,930 14,090 8,971  
Ending Balance 30,133 30,429 30,133 30,429 0
National Lending | Warehouse finance          
Allowance for Credit Losses [Roll Forward]          
Beginning Balance 605 643 646 518 518
Provision (Reversal) 43 21 2 146  
Charge-offs 0 0 0 0  
Recoveries 0 0 0 0  
Ending Balance $ 648 $ 664 $ 648 $ 664 $ 646