Accrued Expenses and Other Liabilities - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accrued Expenses and Other Liabilities
Accrued payroll and related items	$ 2,869	$ 3,841
Artist payables	6,892	5,640
Accrued product costs	2,763	1,678
Operating lease liabilities	3,021	2,772
Contingent liabilities		1,087
Other	6,142	6,273
Accrued expenses and other current liabilities	$ 21,687	$ 21,291