Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Schedule of Geographical Areas of Which Company Operates

The following tables present information about geographic areas in which the Company operates (in thousands):

	Year Ended December 31,
	2017		2016		2015
Revenues(1):
United States	$	665,564	$	669,636	$	709,405
International
Europe(2)	427,655		270,411		376,055
Other geographies	93,819		89,211		44,507
Total	$	1,187,038	$	1,029,258	$	1,129,967

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(1) Revenues are attributed to countries based on location of customer.

(2) Based on the financial information that is used to produce the general-purpose financial statements, providing further geographic information is impracticable.

Schedule of Long-lived Assets by Geographic Areas

	December 31, 2017		December 31, 2016
Long-lived assets(1):
United States	$	40,550	$	39,126
International
United Kingdom	25,287		20,860
Other foreign countries	10,439		12,271
	35,726		33,131
Total	$	76,276	$	72,257

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(1) Long-lived assets consists of property and equipment, net.