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Share-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
May 03, 2021
May 31, 2014
Jun. 30, 2014
Jun. 30, 2021
Jun. 30, 2020
Jun. 23, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Maximum number of shares per participant, 12 month period   1,000,000.0 2,500,000      
Extension of plan term     10 years      
Unrecognized compensation costs related to nonvested awards       $ 13.1    
Unrecognized compensation costs related to nonvested awards, weighted average period for recognition       1 year 1 month 6 days    
Shares available for issuance under the Plan (in shares)       2,500,000    
Stock options granted (in shares)       222,700 249,900  
Options exercised, aggregate intrinsic value       $ 1.1    
Performance Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share grants in period 77,345          
Restricted Stock Units (RSUs) & Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share grants in period 73,108          
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted (in shares) 222,660          
Stock options granted, exercise price (in USD per share) $ 44.33          
Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share grants in period 1,636     152,100 153,600  
Long-term Equity Incentive Plan, 2005            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for grant   5,000,000.0        
Number of additional shares authorized     1,800,000      
Long-term Incentive Plan, 2020            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock, capital shares reserved for future issuance (in shares)           2,827,210
Number of new shares for future issuance under 2020 Long-Term Incentive Plans           2,000,000
Number of unissued shares reserved for 2020 Long-Term Incentive Plans           827,210