Exploration Costs (Tables)

6 Months Ended

Jun. 30, 2012

Exploration Costs [Abstract]

Exploration cost related to mining operations

	Three Months Ended				Six Months Ended				Unaudited Period from November 16, 1994 (inception) to June 30,  2012
	June 30, 2012		June 30, 2011		June 30, 2012		June 30, 2011
Cameroon Africa:
Property evaluation	$	196	$	1,075	$	575	$	2,480	$	53,451
Office costs		526		1,289		931		2,070		30,636
		722		2,364		1,506		4,550		84,087
Other Projects:
Colorado/Wyoming		—		20		2		57		2,068
Arizona		119		169		210		255		1,505
New Mexico		33		69		105		207		666
New Caledonia		244		208		423		368		2,284
Papua New Guinea		40		87		63		169		329
Other		21		8		21		9		444
		457		561		824		1,065		7,296
Total Exploration Costs	$	1,179	$	2,925	$	2,330	$	5,615	$	91,383