Balance Sheet Components - Property Plant and Equipment, Net (Additional Information) (Details) $ in Thousands		3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Jun. 14, 2019 MW	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2019 USD ($) MW	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Property Subject to or Available for Operating Lease [Line Items]
Increase (decrease) in construction In progress														$ (28,600)
Depreciation					$ 14,225				$ 13,304	$ 37,034	$ 26,466	$ 64,948	$ 39,757	78,584	$ 53,887	$ 54,376
Cost of revenue		$ 188,595	$ 181,582	$ 171,976	145,437	$ 150,224	$ 141,209	$ 111,318	124,147	317,413	235,465	498,995	376,674	687,590	526,898	381,934
Equity-method investments		5,733				6,046								5,733	6,046
Debt make-whole payment										(5,934)		(5,934)		(5,934)	0	0
Leasehold improvements
Property Subject to or Available for Operating Lease [Line Items]
Increase (decrease) in construction In progress														(17,600)
Energy Servers
Property Subject to or Available for Operating Lease [Line Items]
Increase (decrease) in construction In progress														(11,000)
Property, Plant and Equipment
Property Subject to or Available for Operating Lease [Line Items]
Depreciation														$ 78,600	53,100	54,400
PPA II
Property Subject to or Available for Operating Lease [Line Items]
Number of replacement megawatts | MW	9.8
PPA IIIb
Property Subject to or Available for Operating Lease [Line Items]
Number of replacement megawatts | MW														5
Variable Interest Entity, Primary Beneficiary | Property subject to operating lease
Property Subject to or Available for Operating Lease [Line Items]
Property, plant and equipment		371,400				397,500								$ 371,400	397,500
Accumulated depreciation		95,500				77,400								95,500	77,400
Variable Interest Entity, Primary Beneficiary | Property, Plant and Equipment
Property Subject to or Available for Operating Lease [Line Items]
Depreciation														27,100	25,500	25,500
Variable Interest Entity, Primary Beneficiary | PPA II
Property Subject to or Available for Operating Lease [Line Items]
Cost of revenue														153,500
Debt make-whole payment														(5,900)
Variable Interest Entity, Primary Beneficiary | PPA IIIb
Property Subject to or Available for Operating Lease [Line Items]
Depreciation														1,700
Debt make-whole payment														$ (18,000)
New Energy Server Systems | PPA II
Property Subject to or Available for Operating Lease [Line Items]
Number of replacement megawatts | MW	30
Energy server repurchased | MW														27.5
New Energy Server Systems | PPA IIIb
Property Subject to or Available for Operating Lease [Line Items]
Number of replacement megawatts | MW														5
Write Off Of Energy Servers
Property Subject to or Available for Operating Lease [Line Items]
Energy server repurchased | MW														19
Write Off Of Energy Servers | PPA II
Property Subject to or Available for Operating Lease [Line Items]
Cost of revenue														$ 52,500
Write Off Of Energy Servers | Variable Interest Entity, Primary Beneficiary | PPA II
Property Subject to or Available for Operating Lease [Line Items]
Cost of revenue														$ 52,500
Write Off Of Energy Servers | Variable Interest Entity, Primary Beneficiary | PPA IIIb
Property Subject to or Available for Operating Lease [Line Items]
Energy server repurchased | MW														5
Electricity
Property Subject to or Available for Operating Lease [Line Items]
Cost of revenue		$ 12,785	$ 27,317	$ 22,300	$ 12,984	$ 11,601	$ 12,180	$ 12,062	$ 13,785	$ 35,284	$ 25,847	$ 62,601	$ 38,027	$ 75,386	$ 49,628	$ 49,475
Electricity | PPA II
Property Subject to or Available for Operating Lease [Line Items]
Cost of revenue														78,400
Sale Of Energy Servers | Variable Interest Entity, Primary Beneficiary | PPA II
Property Subject to or Available for Operating Lease [Line Items]
Depreciation														$ 22,600