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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Aug. 30, 2024
Aug. 31, 2023
Revenue:    
Revenues $ 13,119 $ 20,624
Cost of revenue:    
Cost of revenue 6,041 10,643
Gross profit 7,078 9,981
Operating expenses:    
Research and development 2,361 2,457
Selling, general and administrative 4,558 3,409
Total operating expenses 6,919 5,866
Income from operations 159 4,115
Interest income, net 681 581
Other expense, net (26) (6)
Income before provision for income taxes 814 4,690
Provision for income taxes 154 16
Net income $ 660 $ 4,674
Net income per share:    
Basic $ 0.02 $ 0.16
Diluted $ 0.02 $ 0.16
Shares used in per share calculations:    
Basic 29,107 28,649
Diluted 29,632 29,632
Product [Member]    
Revenue:    
Revenues $ 12,154 $ 19,357
Cost of revenue:    
Cost of revenue 5,418 9,919
Services [Member]    
Revenue:    
Revenues 965 1,267
Cost of revenue:    
Cost of revenue $ 623 $ 724