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Schedule of Carrying Amounts of Major classes of Assets and Liabilities Classified as Held-for-Sale (Parenthetical) (Details) $ in Thousands | Aug. 31, 2018 USD ($)
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Discontinued Operations And Disposal Groups [Abstract] |
Receivables, allowance | $ 244

X
- Definition Disposal group including discontinued operation allowance for accounts, notes and loans receivable. + References No definition available. + Details
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Namespace Prefix: | lnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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