Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

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,
	2019		2018		2017
	(In thousands)
U.S	$	772,586	$	756,907	$	707,906
EMEA	206,975		212,699		211,349
China	119,291		106,841		106,526
Other	132,809		138,522		139,314
Total revenues	$	1,231,661	$	1,214,969	$	1,165,095