Employee Benefits - Schedule of Share-based Compensation, Stock Options, Activity (Details) - $ / shares	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Outstanding at beginning of year
Weighted Average Price	$ 33.77	$ 33.22	$ 26.35
Number	89,500	60,500	51,000
Granted
Weighted Average Price	$ 53.82	$ 34.91	$ 37.40
Number	14,500	29,000	19,500
Exercised
Weighted Average Price			$ 6.38
Number			10,000
Outstanding at year-end
Weighted Average Price	$ 36.56	$ 33.77	$ 33.22
Number	104,000	89,500	60,500
Options exercisable at year-end
Weighted Average Price	$ 31.92	$ 29.79	$ 26.31
Number	44,900	29,000	18,900