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Note 10. Stock Compensation Plans - Textuals (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Oct. 20, 2016 | Oct. 03, 2014
Stock Compensation Plan, Pre-tax Compensation Cost | $ 3.9 | $ 4.0 | $ 5.7 |  |
Non-Employee Directors Stock Compensation Deferral Plan |  |  |  |  |
Stock Compensation Plan, Shares Reserved |  |  |  | 1,000,000 |
Stock Option and Incentive Plan 2014 |  |  |  |  |
Stock Compensation Plan, Shares Reserved |  |  |  |  | 4,500,000

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