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Business Segment and Geographical Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Distribution of Net Revenue by Geographical Area

The distribution of revenue by geographical area was as follows:

	Year ended
	December 31, 2018			December 31, 2017			December 31, 2016
				Restated*			Restated*
	(in thousands)
Ireland	$	1,066,200		$	944,130		$	995,365
Rest of Europe	379,883			355,552			319,935
U.S.	894,978			881,829			866,901
Other	254,716			220,810			182,755
Total	$	2,595,777		$	2,402,321		$	2,364,956

* 2017 and 2016 restated to reflect gross revenue.

Schedule of Distribution of Income from Operations by Geographical Area

The distribution of income from operations, including restructuring and other items, by geographical area was as follows:

	Year ended
	December 31, 2018			December 31, 2017			December 31, 2016
	(in thousands)
Ireland	$	257,089		$	232,032		$	216,149
Rest of Europe	36,280			26,493			34,200
U.S.	58,561			58,322			41,348
Other	21,427			21,491			19,997
Total	$	373,357		$	338,338		$	311,694

c) The distribution of income from operations, excluding restructuring and other items, by geographical area was as follows:

	Year ended
	December 31, 2018			December 31, 2017			December 31, 2016
	(in thousands)
Ireland	$	269,196		$	240,115		$	218,334
Rest of Europe	36,904			26,351			36,509
U.S.	58,340			58,164			44,590
Other	21,407			21,461			20,420
Total	$	385,847		$	346,091		$	319,853

Schedule of Distribution of Property, Plant and Equipment, Net, by Geographical Area

The distribution of property, plant and equipment, net, by geographical area was as follows:

	December 31, 2018			December 31, 2017
	(in thousands)
Ireland	$	106,206		$	111,329
Rest of Europe	9,807			9,026
U.S.	25,535			27,797
Other	17,121			14,899
Total	$	158,669		$	163,051

Schedule of Distribution of Depreciation and Amortization by Geographical Area

The distribution of depreciation and amortization by geographical area was as follows:

	Year ended
	December 31, 2018			December 31, 2017			December 31, 2016
	(in thousands)
Ireland	$	34,721		$	26,277		$	25,766
Rest of Europe	5,331			6,857			6,914
U.S.	21,605			24,246			23,462
Other	4,259			3,917			3,433
Total	$	65,916		$	61,297		$	59,575

Schedule of Distribution of Total Assets by Geographical Area

The distribution of total assets by geographical area was as follows:

	Year Ended
	December 31, 2018			December 31, 2017
	(in thousands)
Ireland	$	1,073,411		$	880,378
Rest of Europe	514,010			504,418
U.S.	646,512			650,681
Other	120,322			111,141
Total	$	2,354,255		$	2,146,618

Schedule of Distribution of Capital Expenditures by Geographical Area

The distribution of capital expenditures by geographical area was as follows:

	Year ended
	December 31, 2018			December 31, 2017			December 31, 2016
	(in thousands)
Ireland	$	30,942		$	24,468		$	27,670
Rest of Europe	2,590			2,819			2,851
U.S.	9,311			11,027			8,432
Other	5,554			6,403			3,648
Total	$	48,397		$	44,717		$	42,601

Schedule of Clients Representing Company's Net Revenue

The following table sets forth the clients which represented 10% or more of the Company's net revenue in each of the periods set out below.

	Year ended
	December 31, 2018		December 31, 2017		December 31, 2016
Client A	14	%	21	%	26	%

Schedule of Distribution of Interest Income by Business Segment

The distribution of interest income by geographical area was as follows:

	Year ended
	December 31, 2018			December 31, 2017			December 31, 2016
	(in thousands)
Ireland	$	2,620		$	1,084		$	407
Rest of Europe	1,750			1,222			1,040
U.S.	17			16			2
Other	372			24			35
Total	$	4,759		$	2,346		$	1,484

Schedule of Distribution of Tax Charge by Geographical Area

The distribution of the income tax charge by geographical area was as follows:

	Year ended
	December 31, 2018			December 31, 2017			December 31, 2016
	(in thousands)
Ireland	$	29,096		$	20,345		$	24,215
Rest of Europe	(434		)	1,921			5,528
U.S.	3,761			14,772			8,381
Other	9,535			9,531			(131		)
Total	$	41,958		$	46,569		$	37,993

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