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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Mar. 31, 2023
Schedule II - Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
Schedule II — Valuation and Qualifying Accounts

Accounts Receivable — Allowance for credit losses

         
Charge to
          
         Balance at     (recovery of)           Balance at  
 Years Ended       beginning of     bad debts     Amounts     end of  
 March 31,    Description   year     expense     written off     year  
2023
  
Allowance for credit losses
  
$
375,000
    
$
108,000
    
$
144,000
    
$
339,000
  
2022
  
Allowance for credit losses
  
$
348,000
    
$
95,000
    
$
68,000
    
$
375,000
  
2021
  
Allowance for credit losses
  
$
4,252,000
    
$
(1,000
)
  
$
3,903,000
    
$
348,000
  

Accounts Receivable — Allowance for customer-payment discrepancies

   
Balance at
    
Charge to
    

   
Balance at
  
 Years Ended        beginning of      discrepancies      Amounts      end of  
 March 31,    Description    year      expense      Processed      year  
2023
  
Allowance for customer-payment discrepancies
  
$
1,375,000
    
$
2,112,000
    
$
1,853,000
    
$
1,634,000
  
2022
  
Allowance for customer-payment discrepancies
  
$
752,000
    
$
2,142,000
    
$
1,519,000
    
$
1,375,000
  
2021
  
Allowance for customer-payment discrepancies
  
$
1,040,000
    
$
694,000
    
$
982,000
    
$
752,000
  

Inventory — Allowance for excess and obsolete inventory

               Provision for              
         Balance at      excess and            Balance at  
 Years Ended        beginning of      obsolete      Amounts    
end of
  
 March 31,    Description    year      inventory      written off      year  
2023
  
Allowance for excess and obsolete inventory
  
$
13,520,000
    
$
18,851,000
    
$
15,935,000
    
$
16,436,000
  
2022
  
Allowance for excess and obsolete inventory
  
$
13,246,000
    
$
13,504,000
    
$
13,230,000
    
$
13,520,000
  
2021
  
Allowance for excess and obsolete inventory
  
$
13,208,000
    
$
12,803,000
    
$
12,765,000
    
$
13,246,000