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Debt and Financing Obligations Debt and Financing Obligations - Stateline Promissory Note (Details) - OpCo - USD ($)
Dec. 02, 2016
Dec. 01, 2016
Maximum    
Debt Instrument [Line Items]    
Subordinated indebtedness   $ 50,000,000
Stateline Project | First Solar    
Debt Instrument [Line Items]    
Interest rate of Promissory Note 4.00%  
Interest rate contingent upon certain conditions 6.00%