Revenue and Accounts Receivable, Net - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Trade receivables, gross	$ 132,931	$ 122,828
Allowance for credit losses	(1,344)	(1,412)	$ (1,797)	$ (1,492)
Allowance for sales returns	(520)	(761)
Trade receivables, net	131,067	120,655
Other (1)	8,827	8,778
Accounts receivable, net	$ 139,894	$ 129,433