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Summary of HNTE and R&D Benefit and Effect on Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 28, 2020	Dec. 30, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
HNTE and R&D benefits	$ 4,235	$ 6,060	$ 7,277
Basic shares	106,366	105,195	103,355
Diluted shares	106,366	106,332	134,036
Basic	$ 0.04	$ 0.06	$ 0.07
Diluted	$ 0.04	$ 0.06	$ 0.05

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- Definition

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+ References

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- Definition

Income Tax Holiday Income Tax Benefits Per Share Diluted

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- Definition

Income tax holiday, shares basic.

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- Definition

Income tax holiday, shares diluted.

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- Definition

Amount 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 income exempt from income tax because of a tax holiday.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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