XML 63 R58.htm IDEA: XBRL DOCUMENT
v3.20.1

Fair Value Measurements (Narrative) (Details) - USD ($) | 6 Months Ended
--- | ---
Feb. 29, 2020 | Feb. 28, 2019
Marketable securities | $ 18,700,000 |
Percentage of marketable securities investments mature within one year | 55.00% |
Percentage of marketable securities investments mature within one to three years | 45.00% |
Fair Value, Measurements, Nonrecurring [Member] |  |
Assets fair value adjustments | $ 0 | $ 0
Liabilities fair value adjustments | $ 0 | $ 0

X
- Definition Percentage of marketable securities investments mature within one to three years. + References No definition available. + Details
Name: | lnn_PercentageOfMarketableSecuritiesInvestmentsMatureWithinOneToThreeYears
Namespace Prefix: | lnn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of marketable securities investments mature within one year. + References No definition available. + Details
Name: | lnn_PercentageOfMarketableSecuritiesInvestmentsMatureWithinOneYear
Namespace Prefix: | lnn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties. + References No definition available. + Details
Name: | us-gaap_AssetsFairValueAdjustment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties. + References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueAdjustment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_MarketableSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |