Recent Accounting Pronouncements - Additional Information (Detail) - Adjustment to Cash Flow Presentation of Restricted Cash - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| New Accounting Pronouncements Or Change In Accounting Principle [Line Items] | ||
| Increase (decrease) in net cash used in investing activities | $ 0.4 | $ (0.4) |
| Increase (decrease) in net cash provided by operating activities | $ (0.5) | |