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Derivative Instruments (Tables)
 12 Months Ended
Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Company's Outstanding Commodity Derivatives
The following is a summary of the Company’s commodity derivatives as of December 31, 2012:
 
PGM Recycling:
 
 
 
 
 
 
 
 
 
 
 
 
Fixed Forwards
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Platinum
 
Palladium
 
Rhodium
Settlement Period
 
Ounces
 
Average
Price
 
Ounces
 
Average Price
 
Ounces
 
Average Price
First Quarter 2013
 
31,362

 
$
1,599

 
50,262

 
$
660

 
8,458

 
$
1,121

Second Quarter 2013
 
3,395

 
$
1,592

 
5,244

 
$
684

 
1,350

 
$
1,074