Segment Information and Geographic Data (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Revenues by Geographical Region

Revenues by geographical region:

	Three Months Ended March 31,
	2018			2017
Americas	$	82,158		$	64,352
Europe		25,209			13,844
Asia Pacific		7,189			4,056
Total	$	114,556		$	82,252
Percentage of revenues generated outside of the Americas		28	%		22	%

Long Lived Assets by Geographical Region

Total long-lived assets by geographical region:

	As of March 31, 2018			As of December 31, 2017
Americas	$	30,783		$	29,764
Europe		14,802			11,257
Asia Pacific		2,149			2,273
Total long-lived assets	$	47,734		$	43,294
Percentage of long-lived assets held outside of the    Americas		36	%		31	%