Accrued and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Product Warranty Liability [Line Items]
Royalties and other fulfillment costs	$ 1,157	$ 1,535
Employee compensation, commissions and benefits	4,172	4,655
Sales, VAT and other taxes payable	1,020	801
Operating Lease, Liability, Current	3,577	3,643
Other	2,946	4,061
Total accrued and other liabilities	25,272	17,495
Accrued royalties, fulfillment and other current liabilities, Napster acquisition contingent consideration	12,400	2,800
Napster
Product Warranty Liability [Line Items]
Accrued royalties, fulfillment and other current liabilities, Napster acquisition contingent consideration	12,400	2,800
Napster | Level 3
Product Warranty Liability [Line Items]
Accrued royalties, fulfillment and other current liabilities, Napster acquisition contingent consideration	$ 12,400	$ 2,800