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Mortgage Loan Servicing and Loans Originating for Sale (Fair Value) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Servicing Asset at Fair Value, Amount [Roll Forward]    
Fair value, beginning of fiscal year $ 811 $ 627
Fair value, end of fiscal year 1,015 811
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]    
Allowance, beginning of fiscal year 158 168
Impairment recoveries (76) (10)
Allowance, end of fiscal year $ 82 $ 158
Weighted-average discount rate 9.11% 9.11%
Weighted-average prepayment speed 13.42% 17.02%