Note 12. Share Owners' Equity - Textuals (Details) - USD ($)	12 Months Ended			56 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2020	Nov. 08, 2018	Aug. 23, 2017	Sep. 29, 2016	Oct. 21, 2015
Stock Repurchase Program, Authorized Amount	$ 80,000,000			$ 80,000,000
Treasury Stock, Value, Acquired, Cost Method	$ 8,794,000	$ 23,431,000	$ 9,418,000
Treasury Stock Acquired, Average Cost Per Share	$ 14.12			$ 14.93
Treasury Stock
Treasury Stock, Value, Acquired, Cost Method	$ 8,794,000	$ 23,431,000	$ 9,418,000	$ 76,700,000
share repurchase plan September 2016 extension
Stock Repurchase Program, Authorized Amount							$ 20,000,000
Share Repurchase Program August 2017 Extension
Stock Repurchase Program, Authorized Amount						$ 20,000,000
Share Repurchase Program November 2018 Extension
Stock Repurchase Program, Authorized Amount					$ 20,000,000
share repurchase program October 2015
Stock Repurchase Program, Authorized Amount								$ 20,000,000