Note 16. Postemployment Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Components of Net Periodic Benefit Cost (before tax):
Service cost	$ 121	$ 119	$ 243	$ 245
Interest cost	10	18	21	37
Amortization of actuarial income	(109)	(90)	(221)	(178)
Net periodic benefit cost	$ 22	$ 47	$ 43	$ 104