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INVENTORIES
3 Months Ended
Mar. 31, 2013
Inventory Disclosure [Abstract]  
Inventories
3. 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):

 

    March 31,     December 31,  
    2013     2012  
Raw materials and components   $ 67,494     $ 57,187  
Work in progress     22,166       24,849  
Finished goods     120,931       82,930  
Aftermarket parts     9,608       9,882  
Used trailers     16,814       14,639  
    $ 237,013     $ 189,487