Prepaid Expenses and Other Current Assets - Prepaid Expenses And Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid income taxes	$ 26,143	$ 47,196
Prepaid sales and other taxes	16,213	10,751
Prepaid equipment and software maintenance	18,114	21,876
Deferred commissions	45,009	41,955
Other prepaid expenses	19,593	22,871
Other current assets	17,604	18,711
Total	$ 142,676	$ 163,360