Derivative Instruments and Hedging Activities - Schedule of Weighted-Average Price of Open Commodity Wwap Contracts (Details) - Not Designated as Hedging Instrument	3 Months Ended	12 Months Ended
	Mar. 31, 2020 $ / gal gal	Dec. 31, 2019 $ / gal gal
Commodity Swap 2020
Derivative [Line Items]
Volumes (Diesel Gallons) | gal	3,736,000	4,986,000
Weighted -Average Price per Diesel Gallon (in usd per gallon) | $ / gal	2.30	2.37
Commodity Swap 2021
Derivative [Line Items]
Volumes (Diesel Gallons) | gal	5,000,000	5,000,000
Weighted -Average Price per Diesel Gallon (in usd per gallon) | $ / gal	2.30	2.34
Commodity Swap 2022
Derivative [Line Items]
Volumes (Diesel Gallons) | gal	5,000,000	5,000,000
Weighted -Average Price per Diesel Gallon (in usd per gallon) | $ / gal	2.30	2.34
Commodity Swap 2023
Derivative [Line Items]
Volumes (Diesel Gallons) | gal	5,000,000	5,000,000
Weighted -Average Price per Diesel Gallon (in usd per gallon) | $ / gal	2.30	2.34
Commodity Swap 2024
Derivative [Line Items]
Volumes (Diesel Gallons) | gal	1,870,000	1,870,000
Weighted -Average Price per Diesel Gallon (in usd per gallon) | $ / gal	1.71	1.76