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Accounts Receivable - Net
 9 Months Ended
Dec. 31, 2012
Accounts Receivable - Net [Abstract]  
Accounts Receivable - Net
5. Accounts Receivable — Net

Included in accounts receivable — net are significant offset accounts related to customer allowances earned, customer payment discrepancies, customer fill rate penalties, returned goods authorizations ("RGA") issued for in-transit unit returns, estimated future credits to be provided for Used Cores returned by the customers and potential bad debts. Due to the forward looking nature and the different aging periods of certain estimated offset accounts, they may not, at any point in time, directly relate to the balances in the open trade accounts receivable.

Accounts receivable — net is comprised of the following:

   
December 31, 2012
  
March 31, 2012
 
Accounts receivable — trade (1)
 $74,003,000  $83,937,000 
Allowance for bad debts
  (1,350,000)  (968,000)
Customer allowances earned (1)
  (21,723,000)  (25,322,000)
Customer payment discrepancies
  (1,850,000)  (280,000)
Customer fill rate penalties (1)
  (7,938,000)  (7,827,000)
Customer returns RGA issued
  (9,507,000)  (5,875,000)
Customer core returns accruals
  (26,464,000)  (23,629,000)
Less: total accounts receivable offset accounts
  (68,832,000)  (63,901,000)
Total accounts receivable — net
 $5,171,000  $20,036,000 

(1)           Amounts shown above as customer allowances earned and customer fill rate penalties include $9,072,000 and $7,827,000, respectively, at March 31, 2012 which have been reclassified from accounts receivable – trade to conform to the fiscal 2013 presentation.

Warranty Returns

The Company allows its customers to return goods to the Company that their end-user customers have returned to them, whether the returned item is or is not defective (warranty returns). The Company accrues an estimate of its exposure to warranty returns based on a historical analysis of the level of this type of return as a percentage of total unit sales. Amounts charged to expense for these warranty returns are considered in arriving at the Company's net sales. At December 31, 2012, the warranty return accrual of $4,795,000 on the credits issued for the returns received was included under the customer returns RGA issued in the above table of accounts receivable – net and the warranty return estimate of $7,969,000 was included in customer finished goods returns accrual in the consolidated balance sheets.

Change in the Company's warranty return accrual is as follows:

   
Three Months Ended
  
Nine Months Ended
 
   
December 31,
  
December 31,
 
   
2012
  
2011
  
2012
  
2011
 
Balance at beginning of period
 $10,258,000  $7,324,000  $9,023,000  $8,969,000 
Charged to expense (1)
  16,860,000   15,421,000   52,438,000   46,047,000 
Amounts processed (1)
  (14,354,000)  (15,180,000)  (48,697,000)  (47,451,000)
Balance at end of period
 $12,764,000  $7,565,000  $12,764,000  $7,565,000 

(1)           Amounts shown above as warranty claims processed and charged to expense for the three and nine months ended December 31, 2011 have been reclassified to conform to the current year presentation.