Quarterly report pursuant to Section 13 or 15(d)

Receivables, Net - Summary of Receivables (Detail)

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Receivables, Net - Summary of Receivables (Detail) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Receivables [Abstract]    
Management and advisory fees receivable $ 3,762 $ 4,369
Unbilled receivables 2,636 2,552
Other receivables 2 2
Receivables 6,400 6,923
Allowance for doubtful receivables (621) (653)
Receivables, net $ 5,779 $ 6,270