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Leases - Classification on our Consolidated Balance Sheet (Detail) $ in Thousands | Sep. 30, 2023 USD ($)
--- | ---
Total lease assets | $ 114,359
Other Assets |
Operating lease right-of-use assets | 1,801
Property Plant and Equipment Net |
Finance lease assets | $ 112,558

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- Definition Represents aggregate of operating and finance lease right of use assets. + References No definition available. + Details
Name: | lstr_LeaseRightOfUseAsset
Namespace Prefix: | lstr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | lstr_BalanceSheetsLocationAxis=lstr_PropertyPlantAndEquipmentNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |