Revenue (Tables)

6 Months Ended

Jun. 30, 2021

Revenue Recognition [Abstract]

Disaggregation of Revenue [Table Text Block]

The following table presents our revenues disaggregated by geography, based on the billing addresses of our customers:

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(In thousands)
U.S.	$	211,010	$	199,408	$	418,072	$	396,911
EMEA	57,714		52,964		114,102		105,069
China	24,935		29,026		50,367		59,213
Other	35,746		32,967		70,485		65,696
Total revenues	$	329,405	$	314,365	$	653,026	$	626,889