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Note 16. Stock Compensation - Stock Compensation Textuals (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Share-based Payment Arrangement, Expense $ 1.1   $ 1.7 $ 3.2 $ 3.6
Share-based Payment Arrangement, Expense, Tax Benefit $ 0.3   $ 0.4 $ 0.8 $ 0.9
Annual Performance Shares          
Stock Compensation, Shares Awarded   34,305      
Annual Performance Shares | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award, Payout Percentage 0.00%     0.00%  
Annual Performance Shares | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 68,610     68,610  
Share-based Compensation Arrangement by Share-based Payment Award, Payout Percentage 200.00%     200.00%  
Relative Total Shareholder Return          
Stock Compensation, Shares Awarded   28,080      
Relative Total Shareholder Return | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award, Payout Percentage 0.00%     0.00%  
Relative Total Shareholder Return | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 56,160     56,160  
Share-based Compensation Arrangement by Share-based Payment Award, Payout Percentage 200.00%     200.00%  
Restricted Stock Units (RSUs)          
Stock Compensation, Shares Awarded 2,500 188,588      
Restricted Stock Units (RSUs) | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award, Payout Percentage 0.00%     0.00%  
Restricted Stock Units (RSUs) | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 35,598     35,598  
Share-based Compensation Arrangement by Share-based Payment Award, Payout Percentage 100.00%     100.00%  
Transformation Units | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award, Payout Percentage 0.00%     0.00%  
Transformation Units | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 2,165     2,165  
Share-based Compensation Arrangement by Share-based Payment Award, Payout Percentage 100.00%     100.00%