Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Information

Summary of total revenue from customers by geographic region

	Three Months Ended
	March 31,
	2018		2017
	(In thousands)
United States	$	78,867	$	70,587
Outside of the United States		13,758		13,392
Total revenues	$	92,625	$	83,979