Unfavorable Contracts Liability - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
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 |