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Noncontrolling Interests - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Noncontrolling Interest [Abstract]      
Net income attributable to noncontrolling interests $ 0 $ (6,000)  
Redeemable noncontrolling interests 0   $ 0
Noncontrolling interest included in permanent shareholders' equity $ 0   $ 0