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Financial Instruments - Schedule of Fair Value, Assets Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 27, 2026
Sep. 27, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash $ 101,507 $ 158,556
Amortized Cost 261,072 227,502
Unrealized Gain 3 32
Unrealized Loss (49) (8)
Estimated Fair Value 261,026 227,526
Cash and Cash Equivalents 206,894 174,668
Marketable Securities 54,132 52,858
Level 1:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 105,387 16,112
Estimated Fair Value 105,387 16,112
Cash and Cash Equivalents 105,387 16,112
Level 1: | Money market funds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 105,387 16,112
Estimated Fair Value 105,387 16,112
Cash and Cash Equivalents 105,387 16,112
Level 2:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 54,178 52,834
Estimated Fair Value 54,132 52,858
Cash and Cash Equivalents 0 0
Unrealized Gain 3 32
Unrealized Loss (49) (8)
Marketable Securities 54,132 52,858
Level 2: | U.S. Treasury securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 54,178 52,834
Estimated Fair Value 54,132 52,858
Cash and Cash Equivalents 0 0
Unrealized Gain 3 32
Unrealized Loss (49) (8)
Marketable Securities $ 54,132 $ 52,858