Revenue Disaggregated Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 321,677	$ 303,379	$ 639,723	$ 631,986
EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues	37,761	28,583	72,560	66,511
Other foreign countries [Member]
Disaggregation of Revenue [Line Items]
Revenues	59,249	66,572	115,145	127,093
Foreign [Member]
Disaggregation of Revenue [Line Items]
Revenues	97,010	95,155	187,705	193,604
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	$ 224,667	$ 208,224	$ 452,018	$ 438,382