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Unfavorable Contracts Liability - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Unfavorable Contracts Liability [Abstract] |  |
Percentage of retail rate charges to affiliates | 60.00% |
Amortization into Wholesale revenues | $ 6,457 | $ 25,200
Unfavorable contracts liability | 18,885 | 44,085
Unfavorable contracts liability, current | 18,885 | $ 25,200
Amortization into Affiliate revenue share | $ 18,743 |

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- Definition Amortization of unfavorable contracts liability into affiliate revenue share. + References No definition available. + Details
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- Definition Amortization of unfavorable contracts liability into wholesale revenue. + References No definition available. + Details
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- Definition Percentage of retail rate charges to affiliates. + References No definition available. + Details
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- Definition Unfavorable contracts liability. + References No definition available. + Details
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- Definition Unfavorable contracts liability. + References No definition available. + Details
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- Definition Unfavorable contracts liability current. + References No definition available. + Details
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