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Cash and cash equivalents (Detail) - USD ($) $ in Thousands	Jan. 03, 2025	Dec. 29, 2023
Cash
Fair Value Measurements [Line Items]
Amortized Cost	$ 201,352	$ 132,464
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	201,352	132,464
Money market securities
Fair Value Measurements [Line Items]
Amortized Cost	57,549	54,686
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	57,549	54,686
Total cash equivalents
Fair Value Measurements [Line Items]
Amortized Cost	57,549	54,686
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	57,549	54,686
Total cash and cash equivalents
Fair Value Measurements [Line Items]
Amortized Cost	258,901	187,150
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	$ 258,901	$ 187,150

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