Inventories, Net
 12 Months Ended
Mar. 31, 2020
Notes To Financial Statements [Abstract]  
Inventories, Net
4. INVENTORIES, NET
Inventories, net consisted of the following:
March 31,
 
2020
 
2019
Raw materials
 
$
94,321

 
$
83,009

Work in process
 
35,643

 
30,694

Finished goods
 
151,381

 
131,051

LIFO reserve
 
(16,937
)
 
(16,757
)
Reserve for excess and obsolete inventory
 
(16,149
)
 
(19,754
)
Inventories, net
 
$
248,259

 
$
208,243