Geographic Information

12 Months Ended

Dec. 31, 2017

Segments, Geographical Areas [Abstract]

Revenue to external customers is attributed to individual countries based upon the location of the customer. Revenue by geographic area is as follows:



	Year Ended December 31,
(in thousands)	2017		2016		2015
United States	$	417,342	$	367,937	$	354,433
Japan	126,262		120,160		104,299
Germany	108,216		99,814		94,546
South Korea	63,011		56,790		55,142
France	53,672		49,294		49,444
Canada	13,824		13,284		13,314
Other European	153,826		139,813		145,985
Other international	159,097		141,373		125,590
Total revenue	$	1,095,250	$	988,465	$	942,753

Property and equipment by geographic area is as follows:



	December 31,
(in thousands)	2017		2016
United States	$	45,498	$	43,810
Europe	5,059		4,753
India	3,704		3,033
Other international	2,835		3,081
Total property and equipment, net	$	57,096	$	54,677