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Loans Receivable (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Loans Receivable (Details) [Line Items]        
Net deferred loan costs $ 309,000 $ 290,000    
Private mortgage insurance percentage 97.00%      
Borrow up percentage 90.00%      
One- to four-family rental properties percentage 80.00%      
Estimated value percentage 80.00%      
Loans secured percentage 90.00%      
One- to four-family loans in process $ 319,000 489,000    
Total loans       $ 815,000
Loans classified as TDRs $ 1,300,000 1,400,000    
Net of a purchase credit discount   $ 88,000 $ 88,000  
Troubled Debt Restructuring [Member]        
Loans Receivable (Details) [Line Items]        
Bankruptcy proceedings, percentage 16.40%      
Multi-family and Nonresidential Loans [Member]        
Loans Receivable (Details) [Line Items]        
Estimated value percentage 80.00%      
Consumer Lending [Member]        
Loans Receivable (Details) [Line Items]        
Estimated value percentage 80.00%      
Home Equity Loans [Member]        
Loans Receivable (Details) [Line Items]        
Estimated value percentage 90.00%