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Goodwill (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

	Six months ended				Year ended
	June 30, 2018				December 31, 2017
	(in thousands)
Opening balance	$	769,058			$	616,088
Current period acquisitions (Note 6)	—				129,222
Prior period acquisitions (Note 6)	122				1,393
Foreign exchange movement	(10,043		)		22,355
Closing balance	$	759,137			$	769,058

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- References

No definition available.

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- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267

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