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Related Party Transactions (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Related Party Transaction [Line Items]    
Treasury stock acquired, shares 400,000 1,101,969
Average cost per share (in usd per share) $ 19.39 $ 16.03
Payments for repurchase of equity $ 7.8 $ 17.7