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TIME CERTIFICATES OF DEPOSITS (Details) - USD ($)
12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
IRA deposit accounts permanently insured by DIF under management of FDIC $ 250,000  
Time certificates of deposits in denominations of $250,000 or more 51,400,000 $ 163,300,000
Time Deposits, Fiscal Year Maturity [Abstract]    
2020 1,289,068,000  
2021 114,051,000  
2022 11,719,000  
2023 1,445,000  
2024 207,000  
Total Certificates 1,416,490,000  
Wholesale deposits 1,557,268,000 $ 1,531,186,000
Non-IRA deposits accounts permanently insured under Dodd-Frank act by DIF under management of FDIC 250,000  
Wholesale Deposits    
Time Deposits, Fiscal Year Maturity [Abstract]    
Wholesale deposits $ 1,300,000,000