XML 111 R91.htm IDEA: XBRL DOCUMENT v3.26.1

Income Taxes - Summary of Changes in the Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 25, 2026	Jan. 26, 2025	Jan. 28, 2024
Income Tax Disclosure [Abstract]
Beginning balance	$ 328,203	$ 304,355	$ 156,850
Additions	20,537	35,071	147,505
Releases	(12,474)	(11,223)	0
Ending balance	$ 336,266	$ 328,203	$ 304,355

X

- Definition

Valuation Allowance Additions

+ References

No definition available.

+ Details

Name:	smtc_ValuationAllowanceAdditions
Namespace Prefix:	smtc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Valuation Allowance Releases

+ References

No definition available.

+ Details

Name:	smtc_ValuationAllowanceReleases
Namespace Prefix:	smtc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

+ Details

Name:	us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration