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Off-Balance Sheet Financial Instruments and Guarantees (Schedule of Fair Value, Off-balance Sheet Risks) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Jun. 30, 2016
Loss Contingencies [Line Items]    
Financial instrument commitments $ 128,556 $ 76,817
Commitments to grant loans [Member]    
Loss Contingencies [Line Items]    
Financial instrument commitments 51,583 22,098
Unfunded commitments under lines of credit [Member]    
Loss Contingencies [Line Items]    
Financial instrument commitments 69,171 49,358
Standby letters of credit [Member]    
Loss Contingencies [Line Items]    
Financial instrument commitments $ 7,802 $ 5,361