XML 30 R29.htm IDEA: XBRL DOCUMENT v2.4.0.6
Mining Properties (Tables)
 3 Months Ended
Mar. 31, 2013
Extractive Industries [Abstract]  
Schedule of Mining Properties
 
As of March 31, 2013
 
December 31, 2012
 
Cost
 
Accumulated
Amortization
 
Net Book Value
 
Cost
 
Accumulated
Amortization
 
Net Book Value
Bogoso/Prestea
$
132,922

 
$
(64,634
)
 
$
68,288

 
$
128,713

 
$
(64,972
)
 
$
63,741

Bogoso refractory plant
70,867

 
(41,814
)
 
29,053

 
70,865

 
(40,662
)
 
30,203

Mampon
16,095

 
—

 
16,095

 
16,095

 
—

 
16,095

Wassa/HBB
362,135

 
(243,297
)
 
118,838

 
352,241

 
(234,847
)
 
117,394

Other
32,183

 
(9,119
)
 
23,064

 
32,182

 
(7,439
)
 
24,743

Total
$
614,202

 
$
(358,864
)
 
$
255,338

 
$
600,096

 
$
(347,920
)
 
$
252,176