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Inventory
3 Months Ended
Jun. 30, 2014
Inventory [Abstract]  
Inventory
5. Inventory

Inventory is comprised of the following:
 
 
June 30, 2014
  
March 31, 2014
 
Non-core inventory
    
Raw materials
 
$
18,084,000
  
$
18,787,000
 
Work-in-process
  
239,000
   
124,000
 
Finished goods
  
30,902,000
   
30,197,000
 
 
  
49,225,000
   
49,108,000
 
Less allowance for excess and obsolete inventory
  
(1,754,000
)
  
(1,862,000
)
Total
 
$
47,471,000
  
$
47,246,000
 
 
        
Inventory unreturned
 
$
7,328,000
  
$
7,534,000
 
Long-term core inventory
        
Used cores held at the Company's facilities
 
$
25,142,000
  
$
23,718,000
 
Used cores expected to be returned by customers
  
5,857,000
   
6,160,000
 
Remanufactured cores held in finished goods
  
20,139,000
   
18,093,000
 
Remanufactured cores held at customers' locations
  
98,936,000
   
96,351,000
 
 
  
150,074,000
   
144,322,000
 
Less allowance for excess and obsolete inventory
  
(654,000
)
  
(846,000
)
Total
 
$
149,420,000
  
$
143,476,000
 
 
        
Long-term core inventory deposits
 
$
29,638,000
  
$
29,375,000