Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accrued Liabilities.
Marketing Funds	$ 39,672
Accrued payroll and related employee costs	11,900	$ 6,517
Accrued taxes	2,451	1,480
Accrued professional fees	2,047	2,010
Other	4,093	3,136
Accrued liabilities	$ 60,163	$ 13,143