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Equity - Schedule of Common Share Issuance (Details) - At The Market - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Equity [Line Items] |  |
Shares Sold (in shares) | 1,052,800 | 5,950,882
Net Proceeds | $ 13,532 | $ 60,977

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- Definition Equity [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 Cash received on stock transaction after deduction of issuance costs. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |