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Investment Securities (Tables)
 6 Months Ended
Dec. 31, 2017
Investment Securities [Abstract]  
Schedule of gross unrealized or unrecognized gains and losses
    December 31, 2017  
(in thousands)   Amortized cost     Gross unrealized/ unrecognized gains     Gross
unrealized/ unrecognized losses		     Estimated fair value  
                         
Available-for-sale Securities                        
Agency mortgage-backed: residential   $ 65     $          1     $        --     $ 66  
                                 
Held-to-maturity Securities                                
Agency mortgage-backed: residential   $ 1,249     $ 33     $ 11     $ 1,271  

 

    June 30, 2017  
(in thousands)   Amortized cost     Gross unrealized/ unrecognized gains     Gross
unrealized/ unrecognized losses		     Estimated fair value  
                         
Available-for-sale Securities                        
Agency mortgage-backed: residential   $ 70     $            1     $            --     $ 71  
                                 
Held-to-maturity Securities                                
Agency mortgage-backed: residential   $ 1,487     $ 45     $ 9     $ 1,523