OIL AND NATURAL GAS PROPERTIES (Details) - USD ($)	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
OIL AND NATURAL GAS PROPERTIES
Evaluated oil and natural gas properties - cost	$ 6,933,071		$ 6,933,071
Accumulated depletion and impairment	(6,280,775)		(6,142,978)
Oil and natural gas properties, net	652,296		790,093
Unevaluated properties	0		$ 0
Depletion expense	$ 137,797	$ 194,871

Proved oil and gas properties, gross, carried under the full cost method.

No definition available.

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Namespace Prefix:	nehc_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Unproved oil and gas properties, gross, carried under the full cost method.

+ References

No definition available.

+ Details

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Namespace Prefix:	nehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The noncash expense charged against earnings to recognize the consumption of oil and gas reserves that are part of an entities' assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_DepletionOfOilAndGasProperties
Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_OilAndGasPropertyAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Amount of accumulated depletion of oil and gas properties accounted for under full cost method.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 932
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479664/932-10-S99-1

+ Details

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Period Type:	instant

- Definition

Amount, after accumulated depletion, of oil and gas properties subject to amortization accounted for under full cost method.

+ References

+ Details

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Period Type:	instant