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Revolving Line of Credit - Ratios (Details) - Revolving Credit Facility $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Revolving Credit Facility
Current borrowing base	$ 30.0
Minimum
Revolving Credit Facility
Leverage ratio	3.5
Maximum
Revolving Credit Facility
Interest coverage ratio	3
Current ratio	1

X

- Definition

The ratio measures the ability of a company to cover its short-term liabilities with its current assets should be maintained.

+ References

No definition available.

+ Details

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Namespace Prefix:	epsn_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The ratio should be maintained to repay outstanding debt from its earnings after adjusted for interest, taxes and non-cash amounts.

+ References

No definition available.

+ Details

Name:	epsn_InterestCoverageRatio
Namespace Prefix:	epsn_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The ratio should maintain among debt and equity which will assesses the ability of the company to meet its financial obligations after adjusted for interest, taxes and non-cash amounts.

+ References

No definition available.

+ Details

Name:	epsn_LeverageRatio
Namespace Prefix:	epsn_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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