Fair Value Measurements - Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Sep. 27, 2024	Dec. 29, 2023
Cash
Fair Value Measurements [Line Items]
Amortized Cost	$ 162,839	$ 132,464
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	162,839	132,464
Money market securities
Fair Value Measurements [Line Items]
Amortized Cost	56,869	54,686
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	56,869	54,686
Total cash equivalents
Fair Value Measurements [Line Items]
Amortized Cost	56,869	54,686
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	56,869	54,686
Total cash and cash equivalents
Fair Value Measurements [Line Items]
Amortized Cost	219,708	187,150
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 219,708	$ 187,150