Prepaid Expenses and Other Current Assets - Prepaid Expenses And Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid income taxes	$ 30,682	$ 26,143
Prepaid sales and other taxes	24,034	16,213
Prepaid equipment and software maintenance	15,526	18,114
Deferred commissions	54,516	45,009
Other prepaid expenses	26,187	19,593
Other current assets	20,461	17,604
Total	$ 171,406	$ 142,676