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Loans Receivable (Details 8) - USD ($)
$ in Thousands
Sep. 30, 2017
Jun. 30, 2017
Financing Receivable, Recorded Investment [Line Items]    
Outstanding balance $ 1,502 $ 1,676
One- to four-family residential real estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Outstanding balance 1,502 1,676
Nonresidential real estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Outstanding balance