Derivative Instruments (Details)	Dec. 31, 2021 MMBTU / d $ / MMBTU
Put option | Year ending December 31, 2026
Derivative Instruments
Notional amount | MMBTU / d	88,748,000
Weighted average strike price | $ / MMBTU	2.55
Natural gas. | NYMEX to TCO | January-December 2022
Derivative Instruments
Notional amount | MMBTU / d	60,000
Weighted average hedged differential | $ / MMBTU	0.515
Natural gas. | NYMEX to TCO | January-December 2023
Derivative Instruments
Notional amount | MMBTU / d	50,000
Weighted average hedged differential | $ / MMBTU	0.525
Natural gas. | NYMEX to TCO | January-December 2024
Derivative Instruments
Notional amount | MMBTU / d	50,000
Weighted average hedged differential | $ / MMBTU	0.530