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Stock-Based Incentive Plan - Valuation Assumptions (Details) - Restricted Stock And Contingent Restricted Stock, Market-Based - $ / shares
9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average fair value of market-based awards granted (in dollars per share) $ 3.08 $ 3.79
Risk-free interest rate 0.23%  
Risk-free interest rate, minimum   1.65%
Risk-free interest rate, maximum   1.87%
Expected vesting term in years 2 years 6 months 21 days  
Expected volatility 56.90%  
Expected volatility, minimum   38.60%
Expected volatility, maximum   43.70%
Dividend yield 3.20%  
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected vesting term in years   1 year 4 months 6 days
Dividend yield   6.00%
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected vesting term in years   2 years 6 months 21 days
Dividend yield   7.20%