Solar Energy Systems, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Property Subject to or Available for Operating Lease [Line Items]
Solar energy systems, gross	$ 3,215,346	$ 2,837,454
Less: accumulated depreciation and amortization	(359,288)	(303,305)
Add: construction-in-progress	95,202	95,217
Total solar energy systems, net	2,951,260	2,629,366
Solar energy system equipment costs
Property Subject to or Available for Operating Lease [Line Items]
Solar energy systems, gross	2,793,188	2,459,856
Inverters
Property Subject to or Available for Operating Lease [Line Items]
Solar energy systems, gross	287,833	260,011
Initial direct costs
Property Subject to or Available for Operating Lease [Line Items]
Solar energy systems, gross	$ 134,325	$ 117,587

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
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The amount of accumulated depreciation, by major property class, recorded on property subject to or available for lease as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
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-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6453916&loc=d3e41460-112716

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Amount before accumulated depreciation of physical assets used in the normal conduct of business to produce goods and services subject to or available for lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6453916&loc=d3e41457-112716

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
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-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

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The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.

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