Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Summary of Revenue and Long-lived Assets

Information regarding revenue for the three years ended December 31, 2016, 2015 and 2014 and long-lived assets as of December 31, 2016 and 2015 follows:

	Year Ended December 31,
	2016		2015		2014
	(In thousands)
Revenues
United States	$	314,343	$	262,558	$	223,741
United Kingdom		54,015		39,338		38,189
Other		1,561		1,202		844
Total	$	369,919	$	303,098	$	262,774

	As of December 31,
	2016		2015
	(In thousands)
Long-lived assets, as defined
United States	$	23,370	$	21,968
United Kingdom		7,713		8,910
Other		21		19
Total	$	31,104	$	30,897