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Fair Value Measurements - Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands | Sep. 29, 2023 | Dec. 30, 2022
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Cash |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | $ 83,121 | $ 109,299
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 83,121 | 109,299
Money market securities |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 53,978 | 52,159
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 53,978 | 52,159
Total cash equivalents |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 53,978 | 52,159
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 53,978 | 52,159
Total cash and cash equivalents |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 137,099 | 161,458
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | $ 137,099 | $ 161,458

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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