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Noncontrolling Interests - Summary of Redeemable Noncontrolling Interests (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Noncontrolling Interest [Abstract]    
Beginning Balance $ 33,151 $ 28,806
Acquisition of redeemable noncontrolling interests 20,147 3,300
Net income attributable to noncontrolling interests 2,933 1,199
Distributions to noncontrolling interests (916) (154)
Ending Balance $ 55,315 $ 33,151