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Employee Benefit Plans, Assumptions Used (Details)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Projected benefit obligation [Abstract]    
Discount rate 3.41% 4.09%
Net periodic pension expense [Abstract]    
Amortization period 12 years 12 years
Discount rate 4.09% 3.81%
Expected long-term rate of return on plan assets 5.00% 5.00%
Compensation rate for frozen plan 0.00%