8. Geographic Data

As more fully described in the Company’s Summary of Significant Accounting Policies, the Company operates in one operating segment. Revenue and long-lived assets by geographic region, based on physical location of the operations recording the sale or the assets are as follows:

Revenues by geographical region:

	Year Ended December 31,
	2017			2016			2015
	(In thousands)
Americas	$	283,696		$	219,422		$	154,625
Europe		70,895			41,616			23,487
Asia Pacific		21,021			9,929			3,831
Total	$	375,612		$	270,967		$	181,943
Percentage of revenues generated outside of the Americas		24	%		19	%		15	%

In 2017, revenue derived from customers outside the United States (international) was approximately 33% of total revenue. In 2016, revenue derived from customers outside the United States (international) was approximately 28% of total revenue.

Total long-lived assets by geographical region:

	As of December 31, 2017			As of December 31, 2016
	(In thousands)
Americas	$	29,764		$	23,205
Europe		11,257			4,716
Asia Pacific		2,273			2,280
Total long lived assets	$	43,294		$	30,201
Percentage of long lived assets held outside of the Americas		31	%		23	%