Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details)

v3.19.2
Derivative Instruments (Details) - Swaps
Jun. 30, 2019
MMBTU / d
$ / MMBTU
Year ending December 31, 2020 | Hedged differential  
Derivative [Line Items]  
Differential hedging price | $ / MMBTU 0.353
Year Ending December 31, 2021 | Hedged differential  
Derivative [Line Items]  
Differential hedging price | $ / MMBTU 0.414
Year ending December 31, 2022 | Hedged differential  
Derivative [Line Items]  
Differential hedging price | $ / MMBTU 0.515
Year ending December 31, 2023 | Hedged differential  
Derivative [Line Items]  
Differential hedging price | $ / MMBTU 0.525
Year ending December 31, 2024 | Hedged differential  
Derivative [Line Items]  
Differential hedging price | $ / MMBTU 0.530
Natural gas | Year ending December 31, 2020  
Derivative [Line Items]  
Notional amount (MMBtu/day) | MMBTU / d 60,000
Natural gas | Year Ending December 31, 2021  
Derivative [Line Items]  
Notional amount (MMBtu/day) | MMBTU / d 40,000
Natural gas | Year ending December 31, 2022  
Derivative [Line Items]  
Notional amount (MMBtu/day) | MMBTU / d 60,000
Natural gas | Year ending December 31, 2023  
Derivative [Line Items]  
Notional amount (MMBtu/day) | MMBTU / d 50,000
Natural gas | Year ending December 31, 2024  
Derivative [Line Items]  
Notional amount (MMBtu/day) | MMBTU / d 50,000