Related Party Transactions - Additional Information (Detail) - Former Advisor [Member] - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2007 |
|
| Related Party Transaction [Line Items] | |||
| Balance due, fully reserved for | $ 220 | ||
| Payments from loans receivable | $ 49 | $ 158 | |
| Loan repayment date | 2015-04 | ||