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Inventories
9 Months Ended
Jan. 31, 2020
Inventory Disclosure [Abstract]  
Inventories
Inventories
The Company measures inventory using the first-in, first-out ("FIFO") method at the lower of cost and net realizable value. Inventories consisted of the following (in thousands):
 
January 31, 2020
 
April 30, 2019
Finished products
$
3,135

 
$
4,139

Work in process
1,796

 
2,179

Raw materials
10,315

 
10,888

 
$
15,246

 
$
17,206


The Company’s International subsidiaries’ inventories were $2,012,000 at January 31, 2020 and $1,863,000 at April 30, 2019 and are included in the above tables.