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Inventory
12 Months Ended
Mar. 31, 2022
Inventory [Abstract]  
Inventory
5. Inventory

Inventory is comprised of the following:

 
 
March 31, 2022
   
March 31, 2021
 
 
           
Raw materials
 
$
150,414,000
   
$
128,190,000
 
Work in process
   
6,880,000
     
5,233,000
 
Finished goods
   
226,729,000
     
168,184,000
 
 
   
384,023,000
     
301,607,000
 
Less allowance for excess and obsolete inventory
   
(13,520,000
)
   
(13,246,000
)
 
               
Total
 
$
370,503,000
   
$
288,361,000
 
 
               
Inventory unreturned
 
$
15,001,000
   
$
14,552,000