Fair Value Measurements - Additional Information (Detail) - Recurring [Member] |
Dec. 31, 2015
USD ($)
|
|---|---|
| Level 1 [Member] | |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
| Assets measured at fair value | $ 0 |
| Level 2 [Member] | |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
| Assets measured at fair value | $ 0 |