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Lease Agreements and Power Purchase Agreements - Future Maturities of Net Financing Receivables for Sales-Type Leases (Details) - USD ($)
$ in Thousands
May 31, 2017
Nov. 30, 2016
Leases [Abstract]    
Scheduled maturities of minimum lease payments receivable, 2017 (remaining six months) $ 2,973  
Scheduled maturities of minimum lease payments receivable, 2018 5,658  
Scheduled maturities of minimum lease payments receivable, 2019 5,744  
Scheduled maturities of minimum lease payments receivable, 2020 5,835  
Scheduled maturities of minimum lease payments receivable, 2021 5,929  
Scheduled maturities of minimum lease payments receivable, Thereafter 71,030  
Scheduled maturities of minimum lease payments receivable, Total $ 97,169 $ 100,161