Inventories (Tables)
 12 Months Ended
Dec. 31, 2012
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current

A summary of inventories is as follows:
 
December 31,
2012
 
December 31,
2011
Finished products
$
20,382

 
$
18,742

In – process
9,513

 
8,351

Raw materials
16,507

 
16,641

Fine and fabricated precious metal in various stages of completion
9,599

 
8,658

 
56,001

 
52,392

Inventory reserve
(2,846
)
 
(2,203
)
 
$
53,155

 
$
50,189
Inventory Supplemental Disclosure
 
December 31,
2012
 
December 31,
2011
Supplemental inventory information:
 
 
 
Precious metals stated at LIFO cost
$
5,460

 
$
4,447

Market value per ounce:
 
 
 
Silver
30.20

 
27.95

Gold
1,675.40

 
1,565.80

Palladium
702.85

 
655.40