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Discontinued Operations - Additional Information (Detail) (USD $) | 12 Months Ended
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Dec. 28, 2013
Discontinued Operations [Line Items] |
Proceeds from sale of discontinued operations | $ 87,000,000 us-gaap_ProceedsFromDivestitureOfBusinesses
Value of net assets sold | 32,500,000 lstr_DisposalGroupIncludingDiscontinuedOperationNetAssetsOfDisposalGroup
Direct transaction costs | 2,400,000 lstr_BusinessDivestitureCostTransactionCosts
Gain on the sale of discontinued operations, income taxes | 19,145,000 us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation
Gain on sale of discontinued operations, net of income taxes | 33,029,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Gain on sale of discontinued operations, per diluted share | $ 0.71 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare
Interest costs allocated in gain calculation | 0 lstr_DiscontinuedOperationInterestCostsAllocatedToGainFromDisposalOfDiscontinuedOperation
Corporate overhead expenses allocated in gain calculation | $ 0 lstr_DiscontinuedOperationOverheadAllocatedToGainFromDisposalOfDiscontinuedOperation

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- Definition Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition Per diluted share amount, after tax, of the gain (loss) on the disposal of discontinued operations. + References No definition available. + Details
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- Definition Amount of tax expense or benefit on gain (loss), not previously recognized, resulting from the sale of a business component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32672-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=18498875&loc=d3e38679-109324 + Details
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