XML 72 R54.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Fair Value Measurements - Investment Impairments and Credit Loss Reserves (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 28, 2024 | Jul. 30, 2023 | Jul. 28, 2024 | Jul. 30, 2023 | Jan. 28, 2024
Fair Value Disclosures [Abstract] |  |  |  |  |
Credit loss reserve for held-to-maturity debt securities and available for sale debt securities | $ 4,500 |  | $ 4,500 |  | $ 4,500
Investment impairments and credit loss reserves, net | $ 0 | $ (227) | (1,109) | $ (260) |
Impairment of equity method investment |  |  | $ 1,100 |  |

X
- Definition Debt Securities, Allowance For Credit Loss + References No definition available. + Details
Name: | smtc_DebtSecuritiesAllowanceForCreditLoss
Namespace Prefix: | smtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Investment Impairments And Credit Loss Reserves + References No definition available. + Details
Name: | smtc_InvestmentImpairmentsAndCreditLossReserves
Namespace Prefix: | smtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of impairment loss on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479536/321-10-50-3 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration