XML 19 R42.htm IDEA: XBRL DOCUMENT v2.4.0.6

Additional Paid-In Capital (Schedule Of Compensation Options) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Additional Paid-In Capital [Abstract]
Compensation option outstanding (in shares)	225,000	225,000
Compensation options, Valuation	$ 294	$ 294
Compensation options, Weighted average exercise price per share (in dollars per share)	$ 3.30	$ 3.30
Expiry date	Apr. 01, 2013	Apr. 01, 2013
Compensation options, Weighted average remaining life (yrs.)	1 month	3 months 18 days

X

- Details

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

X

- Definition

Date the equity-based award expires, in CCYY-MM-DD format.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share-based compensation arrangement by share based payment award compensation options outstanding weighted average exercise price.

+ References

No definition available.

+ Details

Name:	vgz_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix:	vgz_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share based compensation arrangement by share based payment award compensation options outstanding weighted average Remaining life.

+ References

No definition available.

+ Details

Name:	vgz_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationOptionsOutstandingWeightedAverageRemainingLife
Namespace Prefix:	vgz_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of shares granted and reserved for issuance under stock option agreements awarded under the plan that validly exist as of the balance sheet date, including vested options.

+ References

No definition available.

+ Details

Name:	vgz_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedNumber
Namespace Prefix:	vgz_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Fair value of options outstanding. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

+ References

No definition available.

+ Details

Name:	vgz_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingFairValue
Namespace Prefix:	vgz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant