Revenue Disaggregated Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 336,060	$ 318,567	$ 975,783	$ 950,553
EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues	36,239	32,596	108,800	99,107
Other foreign countries [Member]
Disaggregation of Revenue [Line Items]
Revenues	54,523	48,525	169,667	175,618
Foreign [Member]
Disaggregation of Revenue [Line Items]
Revenues	90,762	81,121	278,467	274,725
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	$ 245,298	$ 237,446	$ 697,316	$ 675,828