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Contract Assets (Tables)
6 Months Ended
Sep. 30, 2019
Contract Assets [Abstract]  
Contract Assets
Contract assets are comprised of the following:

  
September 30, 2019
  
March 31, 2019
 
Short-term contract assets
    
Cores expected to be returned by customers
 
$
11,776,000
  
$
14,671,000
 
Upfront payments to customers
  
3,312,000
   
3,101,000
 
Core premiums paid to customers
  
4,383,000
   
4,411,000
 
Total short-term contract assets
 
$
19,471,000
  
$
22,183,000
 
         
Long-term contract assets
     
Remanufactured cores held at customers’ locations
 
$
203,024,000
  
$
196,914,000
 
Upfront payments to customers
  
1,234,000
   
2,775,000
 
Core premiums paid to customers
  
14,502,000
   
16,618,000
 
Long-term core inventory deposits
  
5,569,000
   
5,569,000
 
Total long-term contract assets
 
$
224,329,000
  
$
221,876,000