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Share-Based Compensation - Summary of Restricted Stock and Performance Unit Award Activity (Parenthetical) (Details) - Performance Units
9 Months Ended
Sep. 30, 2021
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock Issued During Period, Shares, Restricted Stock Award, Gross 81,577
Shares issued on accrued dividends 6,683