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Earnings Per Share - Narrative (Details) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Earnings Per Share [Abstract]      
Participating securities outstanding (in shares) 149,754 321,126 198,242
Shares excluded from the computation of diluted net income per share attributable to common stockholders (in shares) 0 0 0