Balance Sheet Components - Standard Product Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Movement in Standard Product Warranty Accrual [Roll Forward]
Accrued warranty balance	$ 9,668	$ 7,321	$ 8,082
Accrued warranty, net (As Revised)	1,849	9,301	5,979
Warranty expenditures during period (As Revised)	(2,668)	(6,954)	(6,740)
Accrued warranty balance	$ 9,881	$ 9,668	$ 7,321
Accounting Standards Update 2014-09
Movement in Standard Product Warranty Accrual [Roll Forward]
Cumulative effect upon adoption of ASC 606				$ 1,032