Balance Sheet Components - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2020		Dec. 31, 2019		Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 886,465		$ 869,681
Less: Accumulated depreciation	(284,899)		(262,622)
Property, plant and equipment, net	601,566	[1]	607,059	[1]	$ 641,259
Energy Servers
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	648,273		650,600
Computers, software and hardware
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	20,884		20,275
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	103,892		101,650
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	8,313		8,339
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	35,784		35,694
Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	46,686		40,512
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 22,633		$ 12,611

[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).