Segment and Geographic Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Summary of Revenue and Long-lived Assets

Information regarding revenue for the three months ended March 31, 2018 and 2017 and long-lived assets as of March 31, 2018 and December 31, 2017 was as follows:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
Revenues
United States	$	96,451	$	86,856
United Kingdom		17,751		15,732
Other		512		376
Total	$	114,714	$	102,964

	As of
	March 31, 2018		December 31, 2017
	(In thousands)
Long-lived assets, as defined
United States	$	29,176	$	27,990
United Kingdom		10,422		10,532
Other		25		26
Total	$	39,623	$	38,548