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Business Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2018
Segment Reporting [Abstract] |
Distribution of Net Revenue by Geographical Area | a) The distribution of revenue by geographical area was as follows:
| Three Months Ended |  | Six Months Ended
| June 30, 2018 |  |  | June 30, 2017 |  |  | June 30, 2018 |  |  | June 30, 2017 |
| (in thousands) |  | (in thousands)
Ireland | $ | 260,120 |  |  | $ | 231,315 |  |  | $ | 495,230 |  |  | $ | 463,663 |
Rest of Europe | 96,692 |  |  | 78,922 |  |  | 191,732 |  |  | 151,479 |
U.S. | 221,201 |  |  | 229,938 |  |  | 446,871 |  |  | 453,020 |
Rest of World | 63,597 |  |  | 51,606 |  |  | 127,902 |  |  | 101,685 |
Total | $ | 641,610 |  |  | $ | 591,781 |  |  | $ | 1,261,735 |  |  | $ | 1,169,847 |
* All sales shown for Ireland are export sales. ** 2017 restated for gross revenue.
Distribution of Income from Operations by Geographical Area | b) The distribution of income from operations including restructuring, by geographical area was as follows:
| Three Months Ended |  | Six Months Ended
| June 30, 2018 |  |  | June 30, 2017 |  |  | June 30, 2018 |  |  | June 30, 2017 |
| (in thousands) |  | (in thousands)
Ireland | $ | 49,587 |  |  | $ | 38,640 |  |  | $ | 119,397 |  |  | $ | 102,608 |
Rest of Europe | 11,658 |  |  | 8,899 |  |  | 16,826 |  |  | 12,598 |
U.S. | 14,703 |  |  | 26,248 |  |  | 26,505 |  |  | 36,747 |
Rest of World | 5,964 |  |  | 4,211 |  |  | 10,904 |  |  | 11,703 |
Total | $ | 81,912 |  |  | $ | 77,998 |  |  | $ | 173,632 |  |  | $ | 163,656 |
c) The distribution of income from operations excluding restructuring, by geographical area was as follows:
| Three Months Ended |  | Six Months Ended
| June 30, 2018 |  |  | June 30, 2017 |  |  | June 30, 2018 |  |  | June 30, 2017 |
| (in thousands) |  | (in thousands)
Ireland | $ | 62,077 |  |  | $ | 46,393 |  |  | $ | 131,887 |  |  | $ | 110,361 |
Rest of Europe | 11,658 |  |  | 8,899 |  |  | 16,826 |  |  | 12,598 |
U.S. | 14,703 |  |  | 26,248 |  |  | 26,505 |  |  | 36,747 |
Rest of World | 5,964 |  |  | 4,211 |  |  | 10,904 |  |  | 11,703 |
Total | $ | 94,402 |  |  | $ | 85,751 |  |  | $ | 186,122 |  |  | $ | 171,409 |
Distribution of Property, Plant and Equipment, Net, by Geographical Area | The distribution of property, plant and equipment, net, by geographical area was as follows:
| June 30, 2018 |  |  | December 31, 2017 |
| (in thousands)
Ireland | $ | 104,070 |  |  | $ | 111,329 |
Rest of Europe | 9,807 |  |  | 9,026 |
U.S. | 25,272 |  |  | 27,797 |
Rest of World | 15,871 |  |  | 14,899 |
Total | $ | 155,020 |  |  | $ | 163,051 |
Distribution of Depreciation and Amortization by Geographical Area | e) The distribution of depreciation and amortization by geographical area was as follows:
| Three Months Ended |  | Six Months Ended
| June 30, 2018 |  |  | June 30, 2017 |  |  | June 30, 2018 |  |  | June 30, 2017 |
| (in thousands) |  | (in thousands)
Ireland | $ | 7,979 |  |  | $ | 6,508 |  |  | $ | 15,864 |  |  | $ | 12,480 |
Rest of Europe | 1,624 |  |  | 1,371 |  |  | 3,163 |  |  | 3,029 |
U.S. | 6,302 |  |  | 5,581 |  |  | 12,601 |  |  | 11,529 |
Rest of World | 1,141 |  |  | 935 |  |  | 2,316 |  |  | 1,805 |
Total | $ | 17,046 |  |  | $ | 14,395 |  |  | $ | 33,944 |  |  | $ | 28,843 |
Distribution of Total Assets by Geographical Area | ) The distribution of total assets by geographical area was as follows:
| June 30, 2018 |  |  | December 31, 2017 |
| (in thousands)
Ireland | $ | 925,280 |  |  | $ | 880,378 |
Rest of Europe | 490,978 |  |  | 504,418 |
U.S. | 639,981 |  |  | 650,681 |
Rest of World | 118,257 |  |  | 111,141 |
Total | $ | 2,174,496 |  |  | $ | 2,146,618 |

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