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Note 9. Investments - Supplemental Employee Retirement Plan Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Schedule of Trading Securities and Other Trading Assets
SERP investments	$ 12,596	$ 12,644
SERP obligation	12,596	12,644
Prepaid Expenses and Other Current Assets
Schedule of Trading Securities and Other Trading Assets
SERP investments	3,054	3,095
Other Noncurrent Assets
Schedule of Trading Securities and Other Trading Assets
SERP investments	9,542	9,549
Other Current Liabilities
Schedule of Trading Securities and Other Trading Assets
SERP obligation	3,054	3,095
Other Noncurrent Liabilities
Schedule of Trading Securities and Other Trading Assets
SERP obligation	$ 9,542	$ 9,549

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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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