Balance Sheet Components - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019		Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018		Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 869,681						$ 977,977
Less: Accumulated depreciation	(262,622)						(261,226)
Property, plant and equipment, net	607,059	[1]	$ 627,385	$ 641,259	$ 711,631	$ 716,751	716,751	[1]	$ 698,123	$ 697,344	$ 702,228
Energy Servers
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	650,600						757,574
Computers, software and hardware
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	20,275						16,536
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	101,650						99,209
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	8,339						4,337
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	35,694						18,629
Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40,512						40,512
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 12,611						$ 41,180

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