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Earnings Per Share - Additional information (Details) - shares | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Earnings Per Share |  |  |
Options Outstanding With An Exercise Price In Excess Of The Market Price | 99,825 | 50,500 | 31,000

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Balance Type: | na
Period Type: | duration

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Namespace Prefix: | us-gaap_
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