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Note 5 - Prepaid Expenses and Other | 12 Months Ended
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Dec. 31, 2024
Prepaid Expenses and Other [Abstract] |
Prepaid Expenses and Other | 5. Prepaid Expenses and Other The Company had prepaid expenses and other assets of $1,114,522 and $1,112,910 as of December 31, 2024 and December 31, 2023, respectively. Current period and prior period prepaid and other assets primarily relate to prepaid claim rentals, surety bonds, and prepaid insurance.

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- Definition Prepaid expenses and other. + References No definition available. + Details
Name: | ctgo_PrepaidExpensesAndOtherAbstract
Namespace Prefix: | ctgo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The complete disclosure for prepaid expenses. + References No definition available. + Details
Name: | ctgo_PrepaidExpensesTextBlock
Namespace Prefix: | ctgo_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration