Receivables, Net - Summary of Receivables (Detail) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Receivables [Abstract] | ||
| Management and advisory fees receivable | $ 2,327 | $ 2,705 |
| Unbilled receivables | 2,532 | 2,229 |
| Other receivables | 2 | 2 |
| Receivables | 4,861 | 4,936 |
| Allowance for doubtful receivables | (359) | (402) |
| Receivables, net | $ 4,502 | $ 4,534 |