Employee Benefit Plans, Assumptions Used (Details)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Projected benefit obligation [Abstract]
Discount rate	2.71%	2.56%
Net periodic pension expense [Abstract]
Amortization period, in years	11 years	11 years
Discount rate	2.56%	3.41%
Expected long-term rate of return on plan assets	5.00%	5.00%
Compensation rate for frozen plan	0.00%