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Distribution of Income from Operations, including Restructuring and Other Items, by Geographical Area (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | $ 26,299 | $ 11,004 | $ 49,295 | $ 22,736
Ireland |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | 12,827 | (305) | 24,843 | (6,601)
Rest Of Europe |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | 3,531 | 6,701 | 7,317 | 16,422
U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | 7,740 | 1,712 | 13,277 | 8,269
Rest of World |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations | $ 2,201 | $ 2,896 | $ 3,858 | $ 4,646

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- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
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- Details
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