XML 51 R33.htm IDEA: XBRL DOCUMENT
v3.19.1

Note 9 - Related Party Transactions (Details Textual) - USD ($) |  | 1 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 23, 2017 | Sep. 30, 2016 | Mar. 31, 2019 | Jun. 30, 2018 | Apr. 26, 2018 | Apr. 16, 2018 | Jan. 22, 2018 | Sep. 30, 2012 | Nov. 29, 2010
Common Stock, Par or Stated Value Per Share |  | $ 0.01 | $ 0.01 | $ 0.01 |  |  |  |  |
Long-term Debt, Total |  |  | $ 0 |  |  |  |  |  |
The Joint Venture Company [Member] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 60.00% |  | 60.00% |  |  |  |
Private Placement [Member] | Certain Purchasers [Member] |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 553,672 |  |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ 0.01 |  |  |  |  |  |  |  |
Shares Issued, Price Per Share | $ 19 |  |  |  |  |  |  |  |
Proceeds from Issuance of Private Placement | $ 10,500,000 |  |  |  |  |  |  |  |
Proceeds from Issuance of Private Placement, Net of Issuance Costs | $ 10,000,000 |  |  |  |  |  |  |  |
Private Placement Fee, Percentage | 6.50% |  |  |  |  |  |  |  |
Private Placement Fee, Reduced Percentage | 3.25% |  |  |  |  |  |  |  |
Payments of Stock Issuance Costs | $ 500,000 |  |  |  |  |  |  |  |
JEX [Member] |  |  |  |  |  |  |  |  |
Overriding Royalty Interest |  |  | 3.00% |  |  |  |  | 2.00% |
Management Services Agreement, Initial Term |  | 1 year |  |  |  |  |  |  |
Management Services Agreement, Fee Per Month |  | $ 32,000 |  |  |  |  |  |  |
JEX [Member] | Expense for Office Space and Equipment [Member] |  |  |  |  |  |  |  |  |
Management Services Agreement, Fee Per Month |  | $ 6,900 |  |  |  |  |  |  |
JEX [Member] | ALASKA |  |  |  |  |  |  |  |  |
Overriding Royalty Interest |  |  |  |  |  |  |  | 2.00% |
Juneau Exploration L.P. [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 13,200 |  |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues | $ 250,800 |  |  |  |  |  |  |  |
Royal Gold [Member] |  |  |  |  |  |  |  |  |
Overriding Royalty Interest |  |  |  |  |  |  |  |  | 3.00%
Royal Gold [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Shares Issued, Price Per Share |  |  |  |  |  | $ 26 |  |  |
Percentage of Ownership Interest Acquired by Related Party |  |  |  |  |  | 13.60% | 12.70% |  |

X
- Definition Represents the amount of monthly expense for fees under a management services agreement. + References No definition available. + Details
Name: | ctgo_ManagementServicesAgreementFeePerMonth
Namespace Prefix: | ctgo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the initial term of a management services agreement. + References No definition available. + Details
Name: | ctgo_ManagementServicesAgreementInitialTerm
Namespace Prefix: | ctgo_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the overriding royalty interest the company would be required to pay if any of the properties are placed into commercial production. + References No definition available. + Details
Name: | ctgo_OverridingRoyaltyInterest
Namespace Prefix: | ctgo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of ownership interest acquired by a related party. + References No definition available. + Details
Name: | ctgo_PercentageOfOwnershipInterestAcquiredByRelatedParty
Namespace Prefix: | ctgo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of fee paid to agent in connection with private placement. + References No definition available. + Details
Name: | ctgo_PrivatePlacementFeePercentage
Namespace Prefix: | ctgo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reduced percentage of fee paid to agent in connection with private placement. + References No definition available. + Details
Name: | ctgo_PrivatePlacementFeeReducedPercentage
Namespace Prefix: | ctgo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement, net of issuance costs. + References No definition available. + Details
Name: | ctgo_ProceedsFromIssuanceOfPrivatePlacementNetOfIssuanceCosts
Namespace Prefix: | ctgo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPrivatePlacement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new stock issued during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ctgo_TheJointVentureCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=ctgo_CertainPurchasersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ctgo_JEXMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NatureOfExpenseAxis=ctgo_ExpenseForOfficeSpaceAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_AK
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ctgo_JuneauExplorationLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ctgo_RoyalGoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |