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Income Taxes - Classification of Net Deferred Income Tax Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
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Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Net deferred income tax assets | $ 450,085 | $ 455,712
Prepaid expenses and other current assets |  |
Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Net deferred income tax assets | 195,804 | 195,841
Other noncurrent assets |  |
Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Net deferred income tax assets | 317,391 | 385,434
Accrued liabilities |  |
Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Net deferred income tax assets | 43 | 181
Other noncurrent liabilities |  |
Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Net deferred income tax assets | $ 63,067 | $ 125,382

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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