Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accrued Liabilities.
Marketing Funds	$ 41,709	$ 39,672
Accrued payroll and related employee costs	3,443	11,900
Accrued taxes	1,833	2,451
Accrued professional fees	1,895	2,047
Other	3,193	4,093
Accrued liabilities	$ 52,073	$ 60,163