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Lease Agreements and Power Purchase Agreements - Future Maturities of Net Financing Receivables for Sales-Type Leases (Details) - USD ($)
$ in Thousands
Nov. 30, 2017
Nov. 30, 2016
Leases [Abstract]    
Scheduled maturities of minimum lease payments receivable, 2018 $ 5,724  
Scheduled maturities of minimum lease payments receivable, 2019 5,663  
Scheduled maturities of minimum lease payments receivable, 2020 5,752  
Scheduled maturities of minimum lease payments receivable, 2021 5,845  
Scheduled maturities of minimum lease payments receivable, 2022 5,940  
Scheduled maturities of minimum lease payments receivable, Thereafter 64,237  
Scheduled maturities of minimum lease payments receivable, Total $ 93,161 $ 100,161