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Stock Incentive Plans - Data Concerning RSUs Granted (Details) - Employees - RSUs
3 Months Ended
Mar. 31, 2020
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
RSU grants during period (in shares) | shares 1,610,179
Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares $ 15.45