Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accrued Liabilities.
Marketing Funds	$ 50,675	$ 48,452
Accrued payroll and related employee costs	7,101	10,692
Accrued taxes	2,019	2,491
Accrued professional fees	2,545	1,806
Other	4,868	5,130
Accrued liabilities	$ 67,208	$ 68,571