Derivative Instruments and Hedging Activities - Summary of Commodity Derivative Activity (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Derivative Assets
Gross Amounts Recognized	$ 12,688	$ 3,993
Net Amount Presented	12,688	3,993
Derivative Liability
Gross Amounts Recognized	3,308	245
Net Amount Presented	3,308	245
Current portion of derivative liabilities, related party | Commodity swaps
Derivative Assets
Gross Amounts Recognized	3,783
Net Amount Presented	3,783
Derivative Liability
Gross Amounts Recognized		164
Net Amount Presented		164
Long-term portion of derivative assets, related party | Commodity swaps
Derivative Assets
Gross Amounts Recognized	8,762	3,270
Net Amount Presented	8,762	3,270
Prepaid expenses and other current assets | Fueling agreements
Derivative Assets
Gross Amounts Recognized	120	232
Net Amount Presented	120	232
Notes receivable and other long-term assets, net | Fueling agreements
Derivative Assets
Gross Amounts Recognized	23	491
Net Amount Presented	23	491
Accrued liabilities | Fueling agreements
Derivative Liability
Gross Amounts Recognized	344	42
Net Amount Presented	344	42
Other long-term liabilities | Fueling agreements
Derivative Liability
Gross Amounts Recognized	2,964	39
Net Amount Presented	$ 2,964	$ 39