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Debt and Finance Leases - Non Recourse Debt (Details) - USD ($) | Oct. 21, 2019 | Jan. 04, 2019 | Sep. 30, 2019
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Agua Caliente Borrower 1 | Subsequent Event |  |  |
Debt Instrument [Line Items] |  |  |
Debt repaid, outstanding amount, percentage | 102.00% |  |
Credit Agreement | Letter of Credit |  |  |
Debt Instrument [Line Items] |  |  |
Credit agreement |  | $ 80,000,000 |
Facility fees |  | 1.33% |
Letters of credit issued |  |  | $ 80,000,000

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