Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2021

Revenues [Abstract]

Disaggregation of Revenue [Table Text Block]

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

	Year Ended December 31,
	2021		2020		2019
	(In thousands)
U.S	$	851,299	$	804,647	$	772,586
EMEA	231,686		214,204		206,975
China	99,727		113,048		119,291
Other	144,864		133,153		132,809
Total revenues	$	1,327,576	$	1,265,052	$	1,231,661