XML 50 R41.htm IDEA: XBRL DOCUMENT
v3.20.1

BASIS OF PRESENTATION (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Basis of Presentation [Line Items] |  |
Other components of net periodic pension (cost) income | $ 1,199 | $ 766

X
- Definition [Line Items] for Basis of Presentation [Table] + References No definition available. + Details
Name: | leco_BasisOfPresentationLineItems
Namespace Prefix: | leco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of defined benefit plan cost (credit), classified as other. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanOtherCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration