Shareholders' Equity (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
0 Months Ended | 3 Months Ended | |||
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Nov. 29, 2010
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Mar. 31, 2014
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Mar. 31, 2015
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Jun. 30, 2014
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Dec. 19, 2012
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Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] | |||||
Common stock, shares authorized | 30,000,000us-gaap_CommonStockSharesAuthorized | 30,000,000us-gaap_CommonStockSharesAuthorized | |||
Preferred stock, shares authorized | 15,000,000us-gaap_PreferredStockSharesAuthorized | ||||
Common stock, shares outstanding | 3,876,206us-gaap_CommonStockSharesOutstanding | 3,805,539us-gaap_CommonStockSharesOutstanding | |||
Common Stock, Shares, Issued | 3,876,206us-gaap_CommonStockSharesIssued | 3,805,539us-gaap_CommonStockSharesIssued | |||
Nonvested balance (in shares) | 18,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber | ||||
Options and warrants outstanding | 1,675,999ctgo_OptionsAndWarrantsOutstanding | ||||
Distribution [Abstract] | |||||
Subsidiary shares issued | 1,600,000us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction | ||||
Number of shares preferential right will allow holder to purchase | 1/100 | ||||
Common stock, par value | $ 0.01us-gaap_CommonStockParOrStatedValuePerShare | $ 0.01us-gaap_CommonStockParOrStatedValuePerShare | |||
Percentage of Preferred Stock Holder Can Under the Rights Plan | 1,675,999.00us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights | 0.01us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights | |||
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 | ||||
Maximum Percentage ownership by persons other than Ken Peak's estate before rights are exercisable | 20.00%ctgo_MaximumPercentageownershipbypersonsotherthanKenPeaksestatebeforerightsareexercisable | ||||
Rate of Rights Distribution | 100.00%ctgo_RateOfRightsDistribution | ||||
Contango [Member] | |||||
Distribution [Abstract] | |||||
Parent contribution | 3.5ctgo_ParentContribution / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = ctgo_ContangoMember |
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Restricted Stock [Member] | |||||
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] | |||||
Nonvested balance (in shares) | 59,666us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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Maximum Percentage ownership by persons other than Ken Peak's estate before rights are exercisable No definition available.
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Number of shares preferential right will allow holder to purchase No definition available.
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Options and warrants outstanding No definition available.
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Parent Contribution No definition available.
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Rate of Rights Distribution No definition available.
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Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. No definition available.
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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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