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Operating Property - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 25, 2021 | Dec. 26, 2020
Property, Plant and Equipment [Line Items] |  |  |
Finance leased assets gross | $ 185,609,000 | $ 189,053,000 |
Finance leases balance sheet assets by major class net. | 137,087,000 | 143,227,000 |
Finance leases | $ 30,659,000 | $ 48,674,000 | $ 31,633,000

X
- Definition Finance lease obligations incurred + References No definition available. + Details
Name: | lstr_FinanceLeaseObligationsIncurred
Namespace Prefix: | lstr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Finance leased assets gross. + References No definition available. + Details
Name: | lstr_FinanceLeasedAssetsGross
Namespace Prefix: | lstr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Finance Leases Balance Sheet Assets By Major Class Net + References No definition available. + Details
Name: | lstr_FinanceLeasesBalanceSheetAssetsByMajorClassNet
Namespace Prefix: | lstr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration