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Commitments and Contingencies (Details Textual) - Gas transportation and processing obligations [Member]
$ in Millions
Dec. 31, 2020
USD ($)
Obligations (Textual)  
Contractual Obligation, Due in Next Fiscal Year $ 5.2
Contractual Obligation, Due in Second Year 3.9
Contractual Obligation, Due in Third Year 2.6
Contractual Obligation, Due in Fourth Year 1.6
Contractual Obligation, Due in Fifth Year 1.1
Contractual Obligation $ 14.4