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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Benefit from income taxes | $ (10,638) | $ (8,547) | $ (31,158) | $ (23,517) |
Net discrete tax (expense) benefit | 4,000 | 4,300 | 3,800 | 3,600 |
Reasonably possible changes to unrecognized tax benefits related to settlement of tax audits and/or expiration of statutes of limitations within the next twelve months | $ 10,000 |  | $ 10,000 |  |
Prepaid expenses and other current assets | New Accounting Pronouncement, Early Adoption, Effect |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
DTA - current |  | 199,400 |  | 199,400 | $ 195,800
Other noncurrent assets | New Accounting Pronouncement, Early Adoption, Effect |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
DTA - noncurrent |  | 195,500 |  | 195,500 | 193,600
Accounts Payable and Accrued Liabilities | New Accounting Pronouncement, Early Adoption, Effect |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
DTL - current |  | 200 |  | 200 |
Other noncurrent liabilities | New Accounting Pronouncement, Early Adoption, Effect |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
DTL - noncurrent |  | $ 3,800 |  | $ 3,800 | $ 2,200

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