Income Taxes - Unrecognized Tax Benefit Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 30, 2021	Jan. 25, 2020	Jan. 26, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns
Balance at beginning of year	$ 4,742	$ 3,786	$ 3,322
Additions based on tax positions related to the fiscal year	1,075	696	444
Additions based on tax positions related to prior years	530	358	77
Reductions related to the expiration of statutes of limitation	(407)	(98)	(57)
Balance at end of year	$ 5,940	$ 4,742	$ 3,786

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

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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-Publisher FASB
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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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