v3.6.0.2
Lease Pass-Through Financing Obligation - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
USD ($)
Arrangement
Dec. 31, 2015
USD ($)
Property Subject To Or Available For Operating Lease [Line Items]    
Number of lease pass-through fund arrangements | Arrangement 8  
Cost of lease $ 3,530,000 $ 2,000,000
Accumulated depreciation on lease 399,500 $ 216,500
Capital lease obligation 112,981  
Current portion of capital lease obligation $ 35,497  
Maximum [Member]    
Property Subject To Or Available For Operating Lease [Line Items]    
Initial lease term 20 years  
Solar Energy Systems Under Lease Pass-through Fund Arrangements [Member]    
Property Subject To Or Available For Operating Lease [Line Items]    
Cost of lease $ 785,300  
Accumulated depreciation on lease 2,100  
Capital lease obligation 122,300  
Current portion of capital lease obligation $ 51,500  
Service and operational obligation term 5 years  
Solar Energy Systems Under Lease Pass-through Fund Arrangements [Member] | Minimum [Member]    
Property Subject To Or Available For Operating Lease [Line Items]    
Initial lease term 10 years  
Solar Energy Systems Under Lease Pass-through Fund Arrangements [Member] | Maximum [Member]    
Property Subject To Or Available For Operating Lease [Line Items]    
Initial lease term 25 years