Annual report pursuant to Section 13 and 15(d)

Notes Receivable from Partners - Schedule of Notes Receivable from Partners (Detail)

v3.20.4
Notes Receivable from Partners - Schedule of Notes Receivable from Partners (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accounts Notes And Loans Receivable [Line Items]      
Interest accrued and capitalized on notes receivable $ 8 $ 13 $ 25
Partners      
Accounts Notes And Loans Receivable [Line Items]      
Beginning balance 645 924  
Repayment of notes (300) (291)  
Interest accrued and capitalized on notes receivable 8 12  
Ending balance $ 353 $ 645 $ 924