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Inventories
3 Months Ended
Jun. 30, 2013
Inventory Disclosure [Abstract]  
Inventories
NOTE 4. Inventories

Inventories are summarized as follows:

 

     June 30,
2013
    March 31,
2013
 

Finished goods

   $ 735      $ 1,024  

Work in process

     7,564        7,350   

Purchased and manufactured parts

     16,162        12,532   
  

 

 

   

 

 

 
     24,461        20,906   

Reserve for slow moving and obsolescence

     (3,610     (3,116
  

 

 

   

 

 

 

Total

   $ 20,851      $ 17,790   
  

 

 

   

 

 

 

 

Inventory obsolescence is determined by identifying specific items based on the age of inventory and by establishing a general reserve based on annual purchases. Analyzing inventory by age showed little movement once items have aged five years, and historical trends showed that 1.1% of purchases would eventually be scrapped. Accordingly, the Company uses these two factors in determining the amount of the reserve.