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Inventories
9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
Inventories
Inventories

Inventories consist of fertilizer products which are valued at the lower of first-in, first-out ("FIFO") cost, or market. Inventories also include raw materials, catalysts, parts and supplies, which are valued at the lower of moving-average cost, which approximates FIFO, or market. The cost of inventories includes inbound freight costs.

Inventories consisted of the following:


September 30,
2013
 
December 31,
2012
 
(in thousands)
Finished goods
$
8,083

 
$
5,234

Raw materials and precious metals
9,412

 
7,038

Parts and supplies
15,343

 
16,677

 
$
32,838

 
$
28,949