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Components of Income Before Provision for Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items] |  |  |
Income before provision for income taxes | $ 120,865 | $ 67,221 | $ 28,995
Ireland |  |  |
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items] |  |  |
Income before provision for income taxes | 80,914 | 12,157 | (33,732)
United States |  |  |
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items] |  |  |
Income before provision for income taxes | 16,218 | 11,371 | 13,317
Other |  |  |
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items] |  |  |
Income before provision for income taxes | $ 23,733 | $ 43,693 | $ 49,410

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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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