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Inventories (Tables)
9 Months Ended
Mar. 04, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventories

Total inventories consist of the following:

 

     March 4, 2018      May 31, 2017  
     (Unaudited)         
     (Dollars in thousands)  

Raw materials

   $ 8,876      $ 7,734  

Work in process

     3,762        4,030  

Finished goods

     408        469  
  

 

 

    

 

 

 
   $ 13,046      $ 12,233