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INVENTORIES
9 Months Ended
Sep. 30, 2011
INVENTORIES
2. 
INVENTORIES

Inventories are stated at the lower of cost, primarily determined on the first-in, first-out (FIFO) method, or market.  The cost of manufactured inventory includes raw material, labor and overhead.  Inventories consist of the following (in thousands):
 
   
September 30,
   
December 31,
 
   
2011
   
2010
 
Raw materials and components
  $ 66,295     $ 27,970  
Work in progress
    12,180       4,025  
Finished goods
    105,659       70,371  
Aftermarket parts
    5,473       4,486  
Used trailers
    10,379       3,998  
    $ 199,986     $ 110,850