Note 7. Earnings Per Share Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 11,039	$ 9,405	$ 22,423	$ 20,281
Average Shares Outstanding for Basic EPS Calculation	36,921	36,793	36,929	36,951
Dilutive Effect of Average Outstanding Compensation Awards	300	295	345	396
Average Shares Outstanding for Diluted EPS Calculation	37,221	37,088	37,274	37,347
Basic Earnings Per Share	$ 0.30	$ 0.26	$ 0.61	$ 0.55
Diluted Earnings Per Share	$ 0.30	$ 0.25	$ 0.60	$ 0.54