Annual report pursuant to Section 13 and 15(d)

Commitments - Schedule of Firm Sales Contracted with Third Parties (Details)

v3.10.0.1
Commitments - Schedule of Firm Sales Contracted with Third Parties (Details)
Dec. 31, 2018
MMBTU
Commitments and Contingencies Disclosure [Abstract]  
2019 (MMBtu per day) 663,000
2020 (MMBtu per day) 526,000
2021 (MMBtu per day) 372,000
2022 (MMBtu per day) 272,000
2023 (MMBtu per day) 255,000
Thereafter (MMBtu per day) 212,000
Total (MMBtu per day) 2,300,000