XML 87 R63.htm IDEA: XBRL DOCUMENT v2.4.1.9

Related Party Transactions (Narrative) (Details) (Sierra Partners LLC [Member], USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended
	Aug. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Sierra Partners LLC [Member]
Related Party Transaction [Line Items]
Monthly retainer fee	$ 10vgz_RelatedPartyTransactionMonthlyRetainerFee / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = vgz_SierraPartnersLlcMember
Payments to related party		$ 80us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = vgz_SierraPartnersLlcMember	$ 120us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = vgz_SierraPartnersLlcMember

X

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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

X

- Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of monthly retainer fee expected to be paid to related party pursuant to the agreement.

+ References

No definition available.

+ Details

Name:	vgz_RelatedPartyTransactionMonthlyRetainerFee
Namespace Prefix:	vgz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration