Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Notes Receivable from Partners - Schedule of Notes Receivable from Partners (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]      
Interest accrued and capitalized on notes receivable $ 25 $ 39 $ 56
Partners      
Accounts Notes And Loans Receivable [Line Items]      
Beginning balance 1,918 2,085  
New notes receivable issued to partners 100 165  
Repayment of notes (1,119) (371)  
Interest accrued and capitalized on notes receivable 25 39  
Ending balance $ 924 $ 1,918 $ 2,085