Segment Information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Information

Summary of total revenue from customers by geographic region

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
	(In thousands)				(In thousands)
United States	$	72,409	$	69,644	$	142,998	$	140,139
Outside of the United States		13,078		12,330		26,469		22,729
Total revenues	$	85,487	$	81,974	$	169,467	$	162,868