Note 8. Commitments and Contingent Liabilities - Product Warranty (Details) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Product Warranty Liability at the beginning of the period	$ 2,294	$ 1,992
Additions to warranty accrual (including changes in estimates)	420	1,043
Settlements made (in cash or in kind)	(797)	(773)
Product Warranty Liability at the end of the period	$ 1,917	$ 2,262