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Note 15. Investments - Investments-Supplemental Employee Retirement Plan Investments Textuals (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Schedule of Trading Securities and Other Trading Assets
Trading Securities, Change in Unrealized Holding Gain (Loss)	$ 1,500	$ 400	$ 100

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount of unrealized holding gain (loss) recognized in the income statement for investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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No definition available.

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