Metal and Other Inventory (Tables)

12 Months Ended

Dec. 31, 2012

Inventory Disclosure [Abstract]

Inventories

Metal and other inventory consist of the following (in thousands):

	December 31, 2012		December 31, 2011
Concentrate and doré inventory	$	91,130	$	73,590
Supplies	79,540		59,191
Metal and other inventory	$	170,670	$	132,781