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Investment Securities (Tables)
 3 Months Ended
Sep. 30, 2017
Investment Securities [Abstract]  
Schedule of gross unrealized or unrecognized gains and losses
  September 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 $69  $1  $--  $70 
                 
Held-to-maturity Securities                
Agency mortgage-backed: residential $1,368  $42  $8  $1,402 

 

  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 

  September 30, 2017 
(in thousands) Amortized Cost  Fair Value 
       
Held-to-maturity Securities        
Agency mortgage-backed: residential $1,368  $1,402