Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Notes Receivable from Partners - Schedule of Notes Receivable from Partners (Detail) - Partners - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Accounts Notes And Loans Receivable [Line Items]    
Beginning balance $ 1,918 $ 2,085
New note receivable issued to partners   165
Repayment of notes (552) (371)
Interest accrued and capitalized on notes receivable 8 39
Ending balance $ 1,374 $ 1,918