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INVENTORY
12 Months Ended
Mar. 31, 2013
INVENTORY  
INVENTORY

6.     INVENTORY

Inventory balances by category are as follows:

 
  March 31,  
  2013   2012  

Finished products

  $ 28,026   $ 20,076  

Parts and supplies

    2,192     2,401  
           

Inventory

  $ 30,218   $ 22,477  
           

Estimated product returns included in inventory at March 31, 2013 and 2012 were $1,505 and $1,610, respectively.