Shareholders' Equity - Dividends (Details) - USD ($)		3 Months Ended
Mar. 01, 2024	Mar. 31, 2024	Mar. 31, 2023
Equity [Abstract]
Cash dividend of common stock (in dollars per share)	$ 0.0625
Annual dividend (in dollars per share)	$ 0.25
Payment of aggregate amount of dividend	$ 1,400,000	$ 1,370,409	$ 1,412,455

The per share amount of a annual dividend expected to be declared.

No definition available.

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Namespace Prefix:	epsn_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

+ Details

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Balance Type:	credit
Period Type:	duration