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v3.20.4

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
State and Local Jurisdiction |  |  |
Income Taxes [Line Items] |  |  |
State taxes paid | $ 1,314 | $ 1,289 | $ 1,679

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- Definition Income Taxes [Line Items] + References No definition available. + Details
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Namespace Prefix: | lxp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition State Taxes Paid + References No definition available. + Details
Name: | lxp_StateTaxesPaid
Namespace Prefix: | lxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |