Noncontrolling Interest	12 Months Ended
Noncontrolling Interest	Dec. 31, 2011
Noncontrolling Interest [Abstract]
Noncontrolling Interest	10. NONCONTROLLING INTEREST On September 2, 2008, GeoCam shareholders approved a GeoCam capital increase for 2008 of CFA francs 30.34 billion equivalent to approximately $67 million, to be issued in multiple cash calls made by the GeoCam Board of Directors. The capital increase was based on GeoCam's 2008 budget and Geovic's pre-2007 capital advances made for GeoCam. At March 31, 2010 all of the 2008 capital increase had been paid by or for the accounts of the shareholders of GeoCam, including Geovic, in their respective ownership interests prior to the capital increase. In May, 2010 GeoCam shareholders approved a capital increase equivalent to approximately $11 million for 2010 and in December an additional $13 million for the remainder of 2010 and 2011. During the year ended December 31, 2010 GeoCam completed 5 cash calls, equivalent to approximately $19.4 million. In the cash calls Geovic paid approximately $11.7 million, representing 60.5% of the cash calls and the noncontrolling interest paid cash of approximately $7.7 million. During the year ended December 31, 2011 GeoCam completed 2 cash calls, equivalent to approximately $8.2 million. In the cash calls Geovic paid approximately $5.0 million, representing 60.5% of the cash calls and the noncontrolling interest paid cash of approximately $3.2 million. At December 31, 2011 there are no approved cash calls remaining, however, GeoCam may approve another capital increase in 2012. The noncontrolling interest balance of approximately $9.9 million at December 31, 2011 [2010—$10.7 million, 2009—$9.9 million] represents the balance from the capital increases contributed by the noncontrolling interest as described above. The difference between the original amounts contributed and the balance at December 31, 2011 represents the noncontrolling interest share of the actual expenditures from January 1, 2007 through December 31, 2011.

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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