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Share Based Compensation - Summary of ESPP Annual Offerings (Details) - ESPP - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common shares purchased (in shares) 85 73 75
Per common share purchase price (in dollars per share) $ 15.12 $ 20.67 $ 20.67