XML 64 R53.htm IDEA: XBRL DOCUMENT v3.21.2

Commodity Risk Management Activities - Commodity Price Risks (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Commodity Risk Management Activities
Recognized gains (losses) on financial commodity derivative contracts	$ (1,827,334)	$ (85,348)	$ (1,361,993)	$ 1,635,669
Cash received (paid) from settlements of derivative contracts	$ (91,660)	$ 1,031,828	$ (27,460)	$ 2,377,769

X

- Definition

The cash inflow (outflow) from settlement of derivative contracts.

+ References

No definition available.

+ Details

Name:	epsn_ProceedsFromPaymentsForSettlementsOfDerivativeContractsOperatingActivities
Namespace Prefix:	epsn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

Name:	us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration