Balance Sheet Components - Other Long-Term Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid and other long-term assets		$ 24,116	$ 29,153
Deferred commissions		6,732	5,007
Equity-method investments		1,954	5,733
Long-term deposits		1,709	1,759
Other long-term assets	[1]	$ 34,511	$ 41,652

[1] We have variable interest entities, which represent a portion of the consolidated balances recorded within these financial statement line items in the consolidated balance sheets (see Note 13 - Portfolio Financings).