Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Accrued bonus and other payroll related	$ 13,607	$ 3,037
Accrued marketing	10,045	5,820
Deferred revenue	6,852	3,453
Income taxes payable		1,349
Other accrued expenses	7,188	1,897
Total accrued expenses and other current liabilities	$ 37,692	$ 15,556