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Note 12 - Subsequent Event (Details Textual) - USD ($) | 1 Months Ended
--- | ---
Apr. 30, 2017 | Mar. 31, 2017 | Mar. 23, 2017
Stock Issued During Period, Shares, Warrants Exercised |  | 983,334 |
Proceeds from Warrant Exercises |  | $ 49,167 |
Subsequent Event [Member] |  |  |
Stock Issued During Period, Shares, Warrants Exercised | 2,500,000 |  | 983,334
Proceeds from Warrant Exercises | $ 100,000 |  | $ 49,167

X
- Definition Number of new shares of common stock issued during the period upon exercise of warrants. + References No definition available. + Details
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Namespace Prefix: | govx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow associated with the amount received from holders exercising their stock warrants. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |