Quarterly report pursuant to Section 13 or 15(d)

Revenue - Summary of Disaggregation of Revenue, Construction Management Fees (Detail)

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Revenue - Summary of Disaggregation of Revenue, Construction Management Fees (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Disaggregation of Revenue [Line Items]        
Revenue $ 92,171 $ 51,352 $ 222,695 $ 160,203
Construction Management Fees [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 2,097 1,792 5,988 5,569
Construction Management Fees [Member] | Multifamily [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 1,295 911 3,353 2,906
Construction Management Fees [Member] | Office Building [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 730 796 2,308 2,297
Construction Management Fees [Member] | Seniors Housing member [Member]        
Disaggregation of Revenue [Line Items]        
Revenue $ 72 $ 85 $ 327 $ 366