Business acquisition cash consideration number of installments.

No definition available.

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- Definition

Mineral claims.

+ References

No definition available.

+ Details

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- Details

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Balance Type:	na
Period Type:	duration

- Definition

Mining lease expiration date.

+ References

No definition available.

+ Details

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

- Definition

Mining lease term.

+ References

No definition available.

+ Details

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

- Definition

Number of payments for acquiring business.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Royalty paid on commercial production.

+ References

No definition available.

+ Details

Name:	jgri_RoyaltyPaidOnCommercialProduction
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of potential cash payments that could result from the contingent consideration arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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

- Definition

Amount of cash paid to acquire the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Balance Type:	na
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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 19

-Paragraph 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-OGP

-Paragraph 48

-IssueDate 2006-05-01

-Chapter 2

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 360

-Section 25

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=6474861&loc=d3e64954-109465

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 10

-Paragraph a

-Subparagraph 15

-Article 4

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-10.(a)(15))

-URI http://asc.fasb.org/extlink&oid=21918352&loc=d3e511914-122862

+ Details

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

+ Details

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Mineral Property Interests (Details Textual)	6 Months Ended		36 Months Ended			1 Months Ended	6 Months Ended				1 Months Ended	10 Months Ended	11 Months Ended					6 Months Ended
Mineral Property Interests (Details Textual)	Jun. 30, 2012 USD ($) MineralClaims	Jun. 30, 2011 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2012 CAD	Dec. 31, 2011	Mar. 30, 2011 Carson Property [Member]	Jun. 30, 2012 Carson Property [Member] USD ($) acre	Jun. 30, 2012 Carson Property [Member] CAD	Dec. 23, 2010 Carson Property [Member] USD ($)	Dec. 23, 2010 Carson Property [Member] CAD	Jan. 31, 2012 Garrett Property [Member]	Oct. 31, 2012 Garrett Property [Member] USD ($)	Nov. 30, 2012 Garrett Property [Member] USD ($)	Jun. 30, 2012 Garrett Property [Member] USD ($) acre Instalment	Jun. 30, 2012 Garrett Property [Member] CAD	Jun. 25, 2011 Garrett Property [Member] USD ($) Instalment	Jun. 25, 2011 Garrett Property [Member] CAD	Jun. 30, 2012 Elijah Property [Member] USD ($)	Jun. 30, 2012 Elijah Property [Member] CAD	Feb. 13, 2012 Elijah Property [Member] USD ($)	Feb. 13, 2012 Elijah Property [Member] CAD	Jun. 25, 2011 January 31, 2012 [Member] USD ($)	Jun. 25, 2011 January 31, 2012 [Member] CAD	Jun. 25, 2011 January 31, 2013 [Member] USD ($)	Jun. 25, 2011 January 31, 2013 [Member] Garrett Property [Member] CAD
Mineral Property Interests (Textual) [Abstract]
Business Acquisition Cash consideration									$ 99,060	100,000						$ 50,765	50,000			$ 50,270	50,000	$ 25,383	25,000	$ 25,383	25,000
Business Acquisition Cash Consideration, Number of Installments																2	2
Business Acquisition Equity consideration						1,000,000					2,000,000							1,000,000	1,000,000
Royalty paid on commercial production of the property									3.00%	3.00%						2.00%	2.00%
Area of Carson Property							1,812							8,900	8,900
Mining Lease Term							21 years
Mining lease expiration date	Jun. 30, 2024
Annual lease payment							1,141
Cash paid				10,090.3			27,500	27,748						6,000	6,054			10,000
Common stock issued				283,099,239	278,579,678		1,000,000							2,000,000	2,000,000			0	0
Number of Payments for Acquiring Business														2	2
Exploration expenses	$ 108,508	$ 12,812	$ 211,250									$ 30,000	$ 32,800					$ 201,097	200,000
Mineral Claims	157