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Item 5. Other Information (Details Textual) | 6 Months Ended
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Jun. 30, 2023 shares
President and Chief Executive Officer [Member] |
Issuer Rule 10b5-1, Arrangement Adoption Date | May 23, 2023
Issuer Rule 10b5-1, Aggregate Available Shares (in shares) | 250,725
Issuer Rule 10b5-1, Arrangement Termination Date | Nov. 29, 2024
Senior Vice President and Chief Financial Officer [Member] |
Issuer Rule 10b5-1, Arrangement Adoption Date | Jun. 01, 2023
Issuer Rule 10b5-1, Aggregate Available Shares (in shares) | 35,175
Issuer Rule 10b5-1, Arrangement Termination Date | Feb. 28, 2024

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- Definition The aggregate number of shares available to be issued under issuer rule 10b5-1. + References No definition available. + Details
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Balance Type: | na
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- Definition The date the arrangement is adopted under issuer rule 10b5-1, in YYYY-MM-DD format. + References No definition available. + Details
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Namespace Prefix: | lscc_
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- Definition The date the arrangement is terminated under issuer rule 10b5-1, in YYYY-MM-DD format. + References No definition available. + Details
Name: | lscc_IssuerRule10b51ArrangementTerminationDate
Namespace Prefix: | lscc_
Data Type: | xbrli:dateItemType
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Period Type: | duration

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- Details
Name: | srt_TitleOfIndividualAxis=lscc_PresidentAndChiefExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
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Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=lscc_SeniorVicePresidentAndChiefFinancialOfficerMember
Namespace Prefix: |
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Balance Type: |
Period Type: |