Note 10. Employee Benefit Plans (Details) - USD ($)	9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Components of Net Periodic Benefit Cost (before tax):
Assets for Plan Benefits, Defined Benefit Plan	$ 0		$ 0
SERP investments	5,400,000		8,700,000
SERP obligation	5,400,000		8,700,000
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ 400,000	$ 100,000
Defined Contribution Plan, Description	The Company matches 50% of eligible employee contributions up to 6%. The Company also provides a discretionary contribution determined annually by the Talent, Culture, and Compensation Committee of the Company’s Board of Directors.
Liability, Defined Benefit Plan	$ 7,400,000		6,600,000
Liability, Defined Benefit Plan, Noncurrent	5,700,000		5,600,000
Liability, Defined Benefit Plan, Current	1,700,000		1,000,000
Other Current Liabilities
Components of Net Periodic Benefit Cost (before tax):
SERP obligation	300,000		2,700,000
Other Noncurrent Liabilities
Components of Net Periodic Benefit Cost (before tax):
SERP obligation	5,100,000		6,000,000
Prepaid Expenses and Other Current Assets
Components of Net Periodic Benefit Cost (before tax):
SERP investments	300,000		2,700,000
Other Noncurrent Assets
Components of Net Periodic Benefit Cost (before tax):
SERP investments	5,100,000		$ 6,000,000
Domestic Defined Contribution Plan [Member]
Components of Net Periodic Benefit Cost (before tax):
Defined Contribution Plan, Cost	$ 3,700,000	$ 4,200,000