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v3.5.0.2

Prepaid Expenses | 3 Months Ended
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Sep. 30, 2016
Prepaid Expense, Current [Abstract] |
Prepaid Expenses | Prepaid Expenses The Company has prepaid expenses of $29,743 and $58,165 as of September 30, 2016 and June 30, 2016, respectively. Prepaid expenses primarily relate to prepaid insurance costs and prepaid XBRL filing costs.

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- Definition Prepaid Expenses [Text Block] + References No definition available. + Details
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Namespace Prefix: | ctgo_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration