Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid expenses	$ 51,021	$ 40,409
Other third party receivables	4,785	8,341
Sales taxes receivable from customers	6,499	6,409
Credit card merchant account balance receivable	796	939
Short term portion of capitalized costs to obtain and fulfill contracts	734	862
Accrued interest receivable	176	233
Other	3,063	2,081
Total	$ 67,074	$ 59,274