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Debt - Pacific Summit Energy LLC (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) trade_credit_arrangement | Dec. 31, 2016 USD ($)
Debt Instrument [Line Items] |  |
Current portion of note payable | $ 8,185 | $ 15,501
Trade Credit Arrangements With Pacific Summit Energy LLC |  |
Debt Instrument [Line Items] |  |
Current portion of note payable | $ 8,185 |
Trade Credit Arrangements With Pacific Summit Energy LLC | Major Energy Companies |  |
Debt Instrument [Line Items] |  |
Number of trade credit arrangements | trade_credit_arrangement | 3 |
Interest rate | 4.20% |
Trade Credit Arrangements With Pacific Summit Energy LLC | Major Energy Companies | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 300.00% |

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