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Inventories (Tables)
9 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Major Classifications of Inventories

Major classifications of inventories are as follows:

 

 

 

 

December 31,

 

 

March 31,

 

 

 

2019

 

 

2019

 

Raw materials and supplies

 

$

2,854

 

 

$

2,787

 

Work in process

 

 

16,463

 

 

 

20,553

 

Finished products

 

 

1,091

 

 

 

1,330

 

Total

 

$

20,408

 

 

$

24,670