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Real Estate Owned (Narrative) (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
property
Jun. 30, 2017
USD ($)
property
Jun. 30, 2016
USD ($)
Real Estate [Line Items]        
Number of real estate properties owned   2 2  
Number of properties acquired in settlement of loans   4 5  
Number of previously foreclosed properties sold   4 7  
Net (loss) gains on sale | $   $ 558 $ (138) $ (52)
Recovery of (provision for) losses on real estate owned | $ $ 552 $ 561 $ (440) $ 60
CALIFORNIA        
Real Estate [Line Items]        
Number of real estate properties owned     1  
ARIZONA        
Real Estate [Line Items]        
Number of real estate properties owned     1