Employee Benefits - Schedule of Share-based Compensation, Stock Options, Activity (Details) - $ / shares	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Outstanding at beginning of year
Weighted Average Price	$ 33.22	$ 26.35	$ 22.18
Number	60,500	51,000	33,500
Granted
Weighted Average Price	$ 34.91	$ 37.40	$ 34.35
Number	29,000	19,500	17,500
Exercised
Weighted Average Price		$ 6.38
Number		10,000
Outstanding at year-end
Weighted Average Price	$ 33.77	$ 33.22	$ 26.35
Number	89,500	60,500	51,000
Options exercisable at year-end
Weighted Average Price	$ 29.79	$ 26.31	$ 14.73
Number	29,000	18,900	20,700