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Inventories
12 Months Ended
May 31, 2023
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories are stated at lower of cost and net realizable value (using the first-in, first-out method). Inventories consisted of the following:
(in thousands)May 31, 2023May 31, 2022
Raw materials$28,679 $28,251 
Work in process6,708 7,186 
Finished goods19,938 15,955 
Total$55,325 $51,392 
The Company periodically reviews inventory for both obsolescence and loss of value. The Company makes assumptions about the future demand for and market value of the inventory. Based on these assumptions, the Company estimates the amount of obsolete, expiring and slow moving inventory. The total inventory reserve at May 31, 2023 and 2022 was $3.1 million and $3.7 million, respectively.