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Distribution of Total Assets by Geographical Area (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	[1]
Segment Reporting Information [Line Items]
Assets	$ 1,900,478	$ 1,717,209
Ireland
Segment Reporting Information [Line Items]
Assets	822,071	663,060
Rest Of Europe
Segment Reporting Information [Line Items]
Assets	352,394	343,733
United States
Segment Reporting Information [Line Items]
Assets	658,016	641,769
Rest of World
Segment Reporting Information [Line Items]
Assets	$ 67,997	$ 68,647
[1] The December 31, 2015 Balance Sheet has been retrospectively restated as required to reflect the requirements of new guidance in respect of the presentation of debt issue costs.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.18)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 12
-Article 7

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