Revenue Recognition - Summary of Receivables and Contract Liabilities From Contracts with Customers (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Change In Contract With Customer Liability [Abstract]
Accounts receivable, gross	$ 46,935	$ 45,792
Chargebacks and other deductions	(17,264)	(12,552)
Provision for credit losses	(9,482)	(9,637)
Accounts receivable, net	20,189	23,603
Deferred revenue	1,289	1,147
Total contract liabilities	$ 1,289	$ 1,147