Cash, Cash Equivalents and Investments - Cash, Cash Equivalents and Short-Term Investments and Long-Term Investments (Detail) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 71,273	$ 71,595
Unrealized Holding Gains	153	2
Unrealized Holding Losses	2	64
Fair Value	71,424	71,533
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	36,059	51,445
Unrealized Holding Gains	0	0
Unrealized Holding Losses	2	4
Fair Value	36,057	51,441
Cash and Cash Equivalents | Cash
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,647	19,050
Unrealized Holding Gains	0	0
Unrealized Holding Losses	0	0
Fair Value	14,647	19,050
Cash and Cash Equivalents | Money market funds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,766	15,090
Unrealized Holding Gains	0	0
Unrealized Holding Losses	0	0
Fair Value	8,766	15,090
Cash and Cash Equivalents | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	250
Unrealized Holding Gains	0
Unrealized Holding Losses	0
Fair Value	250
Cash and Cash Equivalents | Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,796	14,659
Unrealized Holding Gains	0	0
Unrealized Holding Losses	2	4
Fair Value	11,794	14,655
Cash and Cash Equivalents | U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	600	2,646
Unrealized Holding Gains	0	0
Unrealized Holding Losses	0	0
Fair Value	600	2,646
Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	27,029	17,460
Unrealized Holding Gains	62	1
Unrealized Holding Losses	0	56
Fair Value	27,091	17,405
Short-term Investments | Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		12
Unrealized Holding Gains		0
Unrealized Holding Losses		0
Fair Value		12
Short-term Investments | Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,356	5,373
Unrealized Holding Gains	8	0
Unrealized Holding Losses	0	36
Fair Value	3,364	5,337
Short-term Investments | Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		221
Unrealized Holding Gains		0
Unrealized Holding Losses		2
Fair Value		219
Short-term Investments | U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,812	6,498
Unrealized Holding Gains	19	1
Unrealized Holding Losses	0	17
Fair Value	9,831	6,482
Short-term Investments | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,270	1,850
Unrealized Holding Gains	13	0
Unrealized Holding Losses	0	0
Fair Value	3,283	1,850
Short-term Investments | Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,591	3,506
Unrealized Holding Gains	22	0
Unrealized Holding Losses	0	1
Fair Value	10,613	3,505
Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,185	2,690
Unrealized Holding Gains	91	1
Unrealized Holding Losses	0	4
Fair Value	8,276	2,687
Long-term Investments | Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	894	460
Unrealized Holding Gains	0	0
Unrealized Holding Losses	0	4
Fair Value	894	456
Long-term Investments | Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,364	2,230
Unrealized Holding Gains	25	1
Unrealized Holding Losses	0	0
Fair Value	3,389	$ 2,231
Long-term Investments | U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,927
Unrealized Holding Gains	66
Unrealized Holding Losses	0
Fair Value	$ 3,993