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Stock Incentive Plan - Restricted Stock Units (Details) - May 2018 - shares
1 Months Ended 12 Months Ended
May 31, 2018
Jun. 30, 2020
Restricted Stock Units (RSUs)    
Stock Incentive Plan    
Granted (in shares) 250,000  
Time-based Restricted Stock Units    
Stock Incentive Plan    
Vested (in shares)   50,000