Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,047,601	$ 1,893,219
Less: accumulated depreciation	(163,025)	(148,159)
Property and equipment, net	$ 1,884,576	1,745,060
Solar energy systems
Property, Plant and Equipment [Line Items]
Useful Lives	35 years
Property and equipment, gross	$ 1,836,111	1,689,457
Less: accumulated depreciation	(143,800)	(130,900)
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 148,412	143,449
Asset retirement obligations
Property, Plant and Equipment [Line Items]
Useful Lives	30 years
Property and equipment, gross	$ 29,021	26,967
Information technology systems
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Property and equipment, gross	$ 28,495	28,320
Computers and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,644	1,499
Computers and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Computers and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,314	1,014
Leasehold improvements \| Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Leasehold improvements \| Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	6 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful Lives	7 years
Property and equipment, gross	$ 811	735
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,636	1,632
Vehicles \| Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	4 years
Vehicles \| Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 157	$ 146
Other \| Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Other \| Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	6 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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