Income Tax Benefit Differs from Amount that would Result from Applying Federal Statutory Rate (Detail)	12 Months Ended
Jan. 02, 2024	Jan. 03, 2023	Dec. 28, 2021
Income Tax Disclosure [Abstract]
Income tax at statutory rates	21.00%	(21.00%)	(21.00%)
State income taxes, net of federal benefit	5.80%	(10.40%)	(5.00%)
Permanent differences	7.70%	17.30%	0.90%
Income tax credits	(117.90%)	(156.80%)	(58.90%)
Return to provision	0.90%	(4.30%)	2.10%
Prior year tax credit true-up	(6.40%)	14.10%
Benefit from net operating loss carryback		1.80%	2.80%
Change in valuation allowance	(2.60%)	6.80%	(1.10%)
Other, net	(3.20%)	3.40%	(1.00%)
Effective Income Tax Rate, Continuing Operations, Total	(94.70%)	(149.10%)	(81.20%)

Effective income tax benefit from net operating loss carryback

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Effective income tax rate reconciliation at federal statutory income tax rate.

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- Definition

Effective income tax rate reconciliation permanent differences

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Effective income tax reconciliation, return to provision, percent.

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No definition available.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-12

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-12

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.Fact.4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense.

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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