Balance Sheet Components - Property Plant and Equipment, Net (Additional Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Property Subject to or Available for Operating Lease [Line Items]
Decrease in property plant and equipment			$ (19,800)
Depreciation and Amortization			31,023	$ 21,554
Cost of revenue	$ 192,109	$ 136,110	377,061	261,805
Equity-method investments	6,026		6,026		$ 6,046
Property subject to operating lease
Property Subject to or Available for Operating Lease [Line Items]
Property, plant and equipment	397,500		397,500		397,500
Accumulated depreciation	90,200		90,200		$ 77,400
Property, Plant and Equipment
Property Subject to or Available for Operating Lease [Line Items]
Depreciation and Amortization	6,400	$ 6,400	$ 12,700	$ 12,700
Energy Servers, Change In Useful Lives
Property Subject to or Available for Operating Lease [Line Items]
Cost of revenue	8,100
Write Off Of Energy Servers
Property Subject to or Available for Operating Lease [Line Items]
Cost of revenue	$ 25,600