Commodity Risk Management Activities - Fair value of asset (liability) (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Commodity Risk Management Activities
Fair value of asset (liability), beginning of year	$ (297,023)	$ 259,544
Gains (losses) on derivatives included in earnings	4,246,057	(1,938,465)
Settlement of commodity derivative contracts	(1,949,232)	1,381,898
Fair value of asset (liability), end of year	$ 1,999,802	$ (297,023)

No definition available.

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- Definition

Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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-Subparagraph (c)(1)
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-Publisher FASB
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- Definition

Amount of settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability, measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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- Definition

Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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