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Noncontrolling Interests - Summary of Redeemable Noncontrolling Interests (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Noncontrolling Interest [Abstract]    
Beginning Balance $ 28,806 $ 22,417
Acquisition of redeemable noncontrolling interests 3,300 6,125
Net income attributable to noncontrolling interests 1,199 264
Distributions to noncontrolling interests (154)  
Ending Balance $ 33,151 $ 28,806