Note 14. Derivative Instruments - The Effect of Derivative Instruments on Consolidated Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss)
Total Derivative Pre-Tax Gain (Loss) Recognized in Income	$ 1,622	$ 3,832	$ (872)
Foreign Exchange Contract | Nonoperating Income (Expense)
Derivative Instruments, Gain (Loss)
Derivatives Not Designated as Hedging Instruments, Pre-Tax Gain (Loss) Recognized in Income	1,558	2,766	796
Cash Flow Hedging | Foreign Exchange Contract
Derivative Instruments, Gain (Loss)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	64	1,066	(1,668)
Cash Flow Hedging | Foreign Exchange Contract | Cost of Sales
Derivative Instruments, Gain (Loss)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	64	1,061	(1,648)
Cash Flow Hedging | Foreign Exchange Contract | Nonoperating Income (Expense)
Derivative Instruments, Gain (Loss)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	$ 0	$ 5	$ (20)