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Fair Value Measurements of Assets and Liabilities (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($)
$ in Thousands
Dec. 26, 2025
Jun. 27, 2025
Level 1    
Assets:    
Marketable securities $ 391 $ 453
Money market funds | Level 1    
Assets:    
Cash and cash equivalents: 4,038 2,782
Bank certificates of deposit | Level 2    
Assets:    
Cash and cash equivalents: $ 4,377 $ 3,660