Recent Accounting Pronouncements - Additional Information (Detail) - USD ($) |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| New Accounting Pronouncement Early Adoption [Line Items] | ||
| Deferred income tax asset, current | $ 0 | |
| Deferred income tax liability, current | 0 | |
| Deferred income tax asset, noncurrent | $ 14,000,000 | 167,300,000 |
| Deferred income tax liability, noncurrent | $ 8,100,000 | 6,100,000 |
| Scenario, Previously Recognized | ||
| New Accounting Pronouncement Early Adoption [Line Items] | ||
| Deferred income tax asset, current | 6,300,000 | |
| Deferred income tax liability, current | 3,700,000 | |
| Deferred income tax asset, noncurrent | 165,400,000 | |
| Deferred income tax liability, noncurrent | 6,800,000 | |
| 2014 Term Loan, Amended 2015 | ||
| New Accounting Pronouncement Early Adoption [Line Items] | ||
| Deferred financing costs deducted from carrying value | $ 5,000,000 |