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AVAILABLE FOR SALE SECURITIES (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Sep. 30, 2017
Available-for-sale Securities, Amortized Cost Basis [Abstract]    
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis $ 30,587  
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis 17,731  
Available-for-sale Securities, Amortized Cost Basis 48,318  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value 30,568  
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value 17,704  
Available-For-Sale Securities $ 48,272 $ 0