2.4.0.840601 - Disclosure - Stock Options and Warrants (Narrative) (Details)truefalsefalse1false USDfalsefalse$from-2012-01-12-to-2012-01-13.761.0.0.0.0.0.0.0http://www.sec.gov/CIK0001037049duration2012-01-12T00:00:002012-01-13T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USD_per_shareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2false USDfalsefalse$from-2013-04-01-to-2013-06-30.770.0.0.0.0.0.0.0http://www.sec.gov/CIK0001037049duration2013-04-01T00:00:002013-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$from-2013-01-01-to-2013-03-31.769.0.0.0.0.0.0.0http://www.sec.gov/CIK0001037049duration2013-01-01T00:00:002013-03-31T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false falsefalsefrom-2012-10-01-to-2012-12-31.767.0.0.0.0.0.0.0http://www.sec.gov/CIK0001037049duration2012-10-01T00:00:002012-12-31T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli05false falsefalsefrom-2012-07-01-to-2012-09-30.765.0.0.0.0.0.0.0http://www.sec.gov/CIK0001037049duration2012-07-01T00:00:002012-09-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli06false USDfalsefalse$from-2012-04-01-to-2012-06-30.763.0.0.0.0.0.0.0http://www.sec.gov/CIK0001037049duration2012-04-01T00:00:002012-06-30T00:00:00pureStandardhttp://www.xbrl.org/2003/instancepurexbrli0sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$7false USDfalsefalse$from-2012-01-01-to-2012-03-31.759.0.0.0.0.0.0.0http://www.sec.gov/CIK0001037049duration2012-01-01T00:00:002012-03-31T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0pureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8false falsefalsefrom-2013-01-01-to-2013-06-30.771.0.0.0.0.0.0.0http://www.sec.gov/CIK0001037049duration2013-01-01T00:00:002013-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli01true 3us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Share-based Compensation Arrangement by Share-based Payment Award [Line Items]2false 4us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriodus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse005 yearsfalsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse0010 yearsfalsefalsefalsexbrli:durationItemTypenaPeriod from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.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 false0Term of stock options3false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrossus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse16000001600000falsefalsefalse2falsefalsefalse00  falsefalsefalse3falsefalsefalse00  falsefalsefalse4falsefalsefalse00  falsefalsefalse5falsefalsefalse00  falsefalsefalse6truefalsefalse200000200000falsefalsefalse7truefalsefalse16000001600000falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesGross number of share options (or share units) granted during the period.No definition available.false1Stock options granted4false 4us-gaap_DeferredCompensationArrangementWithIndividualExercisePriceus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse0.050.05USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsenum:perShareItemTypedecimalThe per share price that the individual must pay to acquire shares under the deferred compensation arrangement.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false3Stock options granted, exercise price5false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00  falsefalsefalse3falsefalsefalse00  falsefalsefalse4falsefalsefalse00  falsefalsefalse5truefalsefalse10000001000000falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse200000200000falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesThe number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false1Stock options, lapsed6false 4us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssuedus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsetruefalse3truefalsefalse00USD$falsetruefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6truefalsefalse1197911979USD$falsetruefalse7truefalsefalse4368143681USD$falsetruefalse8falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe total fair value of shares issued during the period under a deferred compensation arrangement.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false2Stock options granted, fair value7false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRateus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6truetruefalse00falsefalsefalse7truetruefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false0Stock options granted fair value assumptions, expected dividend yield8false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6truetruefalse0.0450.045falsefalsefalse7truetruefalse0.0450.045falsefalsefalse8falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe risk-free interest rate assumption that is used in valuing an option on its own shares.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false0Stock options granted fair value assumptions, risk free interest rate9false 4us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1us-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse002 years 6 monthsfalsefalsefalse7falsefalsefalse002 years 6 monthsfalsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaExpected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 false0Stock options granted fair value assumptions, expected term10false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6truetruefalse1.61041.6104falsefalsefalse7truetruefalse1.20891.2089falsefalsefalse8falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false0Stock options granted fair value assumptions, volatility rates11false 4us-gaap_ClassOfWarrantOrRightOutstandingus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesNumber of warrants or rights outstanding.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Article 4 false1Warrants outstanding12false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9false truefalsefrom-2013-01-01-to-2013-06-30.771.0.24902.5328.0.0.0.0http://www.sec.gov/CIK0001037049duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseEmployees Who Hold More than 10% of the Company's Capital Stock on the Date of Grant [Member]us-gaap_TitleOfIndividualAxisxbrldihttp://xbrl.org/2006/xbrldiarxg_IndividualWhoHoldsMoreThanTenPercentOfOutstandingStockMemberus-gaap_TitleOfIndividualAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0nanafalse0Employees Who Hold More than 10% of the Company's Capital Stock on the Date of Grant [Member]13true 3us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Share-based Compensation Arrangement by Share-based Payment Award [Line Items]14false 4us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercentus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truetruefalse1.11.1falsefalsefalsenum:percentItemTypepurePurchase price of common stock expressed as a percentage of its fair value.No definition available.false0Exercise price of incentive stock option as a percentage of fair market value of common stock on date of grant15false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse10false truefalsefrom-2013-01-01-to-2013-06-30.771.0.24933.4031.0.0.0.0http://www.sec.gov/CIK0001037049duration2013-01-01T00:00:002013-06-30T00:00:00falsefalse2007 Stock Option Plan [Member]us-gaap_PlanNameAxisxbrldihttp://xbrl.org/2006/xbrldiarxg_StockOptionPlanTwentyZeroSevenMemberus-gaap_PlanNameAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0nanafalse02007 Stock Option Plan [Member]16true 3us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Share-based Compensation Arrangement by Share-based Payment Award [Line Items]17false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximumus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truetruefalse0.10.1falsefalsefalsenum:percentItemTypepureMaximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.No definition available.false0Aggregate percentage of total shares of common stock outstanding reserved for awards18false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployeeus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truefalsefalse25000002500000falsefalsefalsexbrli:sharesItemTypesharesThe highest quantity of shares an employee can purchase under the plan per period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false1Maximum shares of common stock plan participant may receive in any one calendar year19false 4us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercentus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truetruefalse11falsefalsefalsenum:percentItemTypepurePurchase price of common stock expressed as a percentage of its fair value.No definition available.false0Exercise price of incentive stock option as a percentage of fair market value of common stock on date of grantfalseStock Options and Warrants (Narrative) (Details) (USD $)NoRoundingNoRoundingNoRoundingUnKnowntruefalsefalseSheethttp://aurora-gold.com/role/StockOptionsAndWarrantsNarrativeDetails819