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Inventories
3 Months Ended
Jul. 31, 2016
Inventory Disclosure [Abstract]  
Inventories

C. Inventories

Inventories consisted of the following (in thousands):

 

     July 31, 2016      April 30, 2016  

Finished products

   $ 4,177       $ 3,707   

Work in process

     2,221         1,889   

Raw materials

     10,387         10,030   
  

 

 

    

 

 

 
   $ 16,785       $ 15,626   
  

 

 

    

 

 

 

The Company uses the last-in, first-out (LIFO) method of valuing inventory for its domestic operations. An actual valuation of inventory under the LIFO method can be made only at the end of each year based on the inventory levels and costs at that time. Interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and costs, and are subject to the final year-end LIFO inventory valuation.