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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Troubled Debt Restructuring) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2021
USD ($)
Integer
Jun. 30, 2021
USD ($)
Integer
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Number of Loans | Integer 1 2
Investment Before TDR Modification $ 112 $ 330
Investment After TDR Modification $ 124 $ 373
One-to four-family residential [Member]    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Number of Loans | Integer 1 2
Investment Before TDR Modification $ 112 $ 330
Investment After TDR Modification $ 124 $ 373