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Inventory (Tables)
3 Months Ended
Jun. 30, 2013
Inventory [Abstract]  
Schedule of Inventory
Inventory is comprised of the following:

 
 
June 30, 2013
  
March 31, 2013
 
Non-core inventory
 
  
 
Raw materials
 
$
14,800,000
  
$
14,152,000
 
Work-in-process
  
159,000
   
137,000
 
Finished goods
  
18,551,000
   
19,239,000
 
 
  
33,510,000
   
33,528,000
 
Less allowance for excess and obsolete inventory
  
(1,797,000
)
  
(1,690,000
)
 
        
Total
 
$
31,713,000
  
$
31,838,000
 
 
        
Inventory unreturned
 
$
7,532,000
  
$
6,981,000
 
Long-term core inventory
        
Used cores held at the Company's facilities
 
$
25,344,000
  
$
22,227,000
 
Used cores expected to be returned by customers
  
4,734,000
   
5,147,000
 
Remanufactured cores held in finished goods
  
14,599,000
   
15,019,000
 
Remanufactured cores held at customers' locations
  
78,876,000
   
76,626,000
 
 
  
123,553,000
   
119,019,000
 
Less allowance for excess and obsolete inventory
  
(928,000
)
  
(808,000
)
 
        
Total
 
$
122,625,000
  
$
118,211,000
 
 
        
Long-term core inventory deposits
 
$
27,805,000
  
$
27,610,000