Balance Sheet Components - Other Long-Term Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020		Dec. 31, 2019		Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid and other long-term assets	$ 31,134		$ 29,153
Deferred commissions	5,668		5,007
Equity-method investments	5,897		5,733
Long-term deposits	1,897		1,759
Other long-term assets	$ 44,596	[1]	$ 41,652	[1]	$ 45,447

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