Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018
Schedule of Unrecognized Tax Benefits [Line Items]
Balance at beginning of year	$ 836	$ 292
Increases related to current year tax positions	101	8
(Decreases) Increases related to prior year tax positions	(63)	636
Decreases related to settlements		(100)
Decreases related to lapse of statute of limitations	(63)
Balance at end of year	$ 811	$ 836

Schedule of Unrecognized Tax Benefits [Line Items]

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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