Agreement term.

No definition available.

Name:	NGLD_AgreementTerm
Namespace Prefix:	NGLD_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

AnnualMiningClaimFees.

+ References

No definition available.

+ Details

Name:	NGLD_AnnualMiningClaimFees
Namespace Prefix:	NGLD_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Gain on sale of mineral interest.

+ References

No definition available.

+ Details

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Namespace Prefix:	NGLD_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Initial cash payment of lease.

+ References

No definition available.

+ Details

Name:	NGLD_InitialCashPaymentOfLease
Namespace Prefix:	NGLD_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Lease description.

+ References

No definition available.

+ Details

Name:	NGLD_LeaseDescription
Namespace Prefix:	NGLD_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Purchase price one time payment.

+ References

No definition available.

+ Details

Name:	NGLD_PurchasePriceOnetimePayment
Namespace Prefix:	NGLD_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Royalty percentage.

+ References

No definition available.

+ Details

Name:	NGLD_RoyaltyPercentage
Namespace Prefix:	NGLD_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Mineral properties, net of adjustments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 25
-Paragraph 7
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-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

Name:	us-gaap_MineralPropertiesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
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-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

+ Details

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

- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=NGLD_SixtyNineOrsaClaimsAndSeventyFiveLazyClaimsMember
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- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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- Details

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- Details

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- Details

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- Details

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Mineral Property Interests (Details Narrative) - USD ($)			3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 11, 2018	Aug. 02, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Loss (gain) on sale of mineral interest			$ (14,152)	$ 2,262,519	$ (14,152)	$ 2,262,519
Mineral property interest							$ 69,152
69 Orsa Claims and 75 Lazy Claims [Member]
Royalty payments							$ 54,152
Garfield Agreement [Member]
Percentage of ownership interest			100.00%		100.00%
One-time payment					$ 300,000
Lease Agreement [Member] \| Tarsis Resources US Inc [Member]
Royalty percentage		2.00%
Royalty payments		$ 2,000
Lease description		The term of the Lazy Claims Agreement is ten years, and is subject to extension for additional two consecutive 10-year terms.
Agreement term		10 years
Initial cash payment of lease		$ 1,000
Lease payable		2,000
Annual minimum payment		$ 2,000
Lazy Claims Agreement [Member]
Mineral property interest			$ 2,511		2,511
Annual minimum payment			2,000		2,000
Annual mining claim fees			$ 511		$ 511
Vendor [Member]
Royalty percentage					2.00%
Walker River Resources Corp [Member]
Percentage of ownership interest			10.00%		10.00%
Walker River Resources Corp [Member] \| Definitive Purchase Agreement [Member]
Cash consideration	$ 55,000