Note 9. Earnings Per Share Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Net income	$ 7,954	$ 5,850	$ 28,235	$ 24,185
Average Number of Shares Outstanding - Basic	36,712	37,259	36,871	37,388
Dilutive Effect of Average Outstanding Compensation Awards	197	280	389	325
Average Number of Shares Outstanding - Diluted	36,909	37,539	37,260	37,713
Basic Earnings Per Share	$ 0.22	$ 0.16	$ 0.77	$ 0.65
Diluted Earnings Per Share	$ 0.22	$ 0.16	$ 0.76	$ 0.64