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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND RECENTLY ADOPTED ACCOUNTING STANDARDS UPDATES ("ASU") (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Sep. 30, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Loans $ 4,068,511 $ 3,529,280
Loans held for sale 87,351 21,071
National Lending | Commercial finance    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Loans 3,440,738 $ 3,023,673
Special Purpose Entity    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Equity investment 900  
Special Purpose Entity | National Lending | Commercial finance    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Loans 9,900  
Loans held for sale $ 3,000