Description of Business - Summary of Assets Comprise the Portfolio (Details)	3 Months Ended
	Feb. 28, 2017 MW
Description Of Business And Basis Of Presentation [Line Items]
MW(ac)	945
California | Macy's Corporate Services
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2015-08
MW(ac)	3
Remaining Term of Offtake Agreement (in years)	18 years 8 months 12 days
Maryland Solar | Maryland | First Energy Solutions
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2014-02
MW(ac)	20
Remaining Term of Offtake Agreement (in years)	16 years 1 month 6 days
Solar Gen Two Project Entity | California | San Diego Gas & Electric
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2014-11
MW(ac)	150
Remaining Term of Offtake Agreement (in years)	22 years 8 months 12 days
Lost Hills Blackwell Project Entity | California | City of Roseville/Pacific Gas and Electric
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2015-04
MW(ac)	32
Remaining Term of Offtake Agreement (in years)	26 years 9 months 18 days
North Star Project Entity | California | Pacific Gas and Electric
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2015-06
MW(ac)	60
Remaining Term of Offtake Agreement (in years)	18 years 3 months 18 days
Hooper | Colorado | Publix Service Company of Colorado
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2015-12
MW(ac)	50
Remaining Term of Offtake Agreement (in years)	18 years 9 months 18 days
RPU | California | City of Riverside
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2015-09
MW(ac)	7
Remaining Term of Offtake Agreement (in years)	23 years 7 months 6 days
Kingbird | California | Southern California Public Power Authority
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2016-04
MW(ac)	40
Remaining Term of Offtake Agreement (in years)	19 years 2 months 12 days
Quinto | California | Southern California Edison
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2015-11
MW(ac)	108
Remaining Term of Offtake Agreement (in years)	18 years 9 months 18 days
Henrietta | California | Pacific Gas and Electric
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2016-10
MW(ac)	102
Remaining Term of Offtake Agreement (in years)	19 years 7 months 6 days
Stateline Project | California | Southern California Edison
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2016-08
MW(ac)	300
Remaining Term of Offtake Agreement (in years)	19 years 6 months
UC Davis | California | University of California
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2015-09
MW(ac)	13
Remaining Term of Offtake Agreement (in years)	18 years 6 months
Macy's Maryland | Maryland | Macy's Corporate Services
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2016-12
MW(ac)	5
Remaining Term of Offtake Agreement (in years)	19 years 9 months 18 days
Residential Portfolio | U.S. – Various | Approximately 5,900 homeowners
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2014-06
MW(ac)	39
Remaining Term of Offtake Agreement (in years)	15 years 6 months
Kern | California | Kern High School District
Description Of Business And Basis Of Presentation [Line Items]
Commercial Operation Date	2017-01
MW(ac)	16
Remaining Term of Offtake Agreement (in years)	19 years 9 months 18 days