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Note 9. Investments - Supplemental Employee Retirement Plan Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020
Schedule of Trading Securities and Other Trading Assets
SERP investments	$ 12,056	$ 10,477
SERP obligation	12,056	10,477
Prepaid Expenses and Other Current Assets
Schedule of Trading Securities and Other Trading Assets
SERP investments	2,552	1,972
Other Noncurrent Assets
Schedule of Trading Securities and Other Trading Assets
SERP investments	9,504	8,505
Other Current Liabilities
Schedule of Trading Securities and Other Trading Assets
SERP obligation	2,552	1,972
Other Noncurrent Liabilities
Schedule of Trading Securities and Other Trading Assets
SERP obligation	$ 9,504	$ 8,505

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The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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