Quarterly report pursuant to Section 13 or 15(d)

Pass-through Financing Obligations - Additional Information (Details)

v3.10.0.1
Pass-through Financing Obligations - Additional Information (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Property Subject to or Available for Operating Lease [Line Items]    
Initial lease term 20 years  
Solar energy systems, gross $ 3,996,770 $ 3,441,797
Depreciation on lease $ 498,797 399,280
Discount on expected remaining lease payments 5.00%  
Solar energy systems under lease pass-through fund arrangements    
Property Subject to or Available for Operating Lease [Line Items]    
Initial lease term 20 years  
Solar energy systems, gross $ 565,300 464,200
Depreciation on lease $ 76,500 $ 63,700