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Investments in Real Estate - Schedule of Land Held for Development (Details) $ in Thousands | 9 Months Ended |
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Sep. 30, 2023 USD ($) a | Dec. 31, 2022 USD ($)
Real Estate [Line Items] |  |
GAAP Investment Balance as of 9/30/2023 | $ 84,708 | $ 84,412
Real Estate Investment |  |
Real Estate [Line Items] |  |
Approx. Developable Acres | a | 450 |
GAAP Investment Balance as of 9/30/2023 | $ 84,708 |
LXP Amount Funded as of 9/30/2023 | $ 80,932 |
Reems & Olive | Phoenix, AZ | Real Estate Investment |  |
Real Estate [Line Items] |  |
Project (% owned) | 95.50% |
Approx. Developable Acres | a | 320 |
GAAP Investment Balance as of 9/30/2023 | $ 77,653 |
LXP Amount Funded as of 9/30/2023 | $ 74,913 |
Mt. Comfort Phase II | Indianapolis, IN | Real Estate Investment |  |
Real Estate [Line Items] |  |
Project (% owned) | 80.00% |
Approx. Developable Acres | a | 116 |
GAAP Investment Balance as of 9/30/2023 | $ 5,323 |
LXP Amount Funded as of 9/30/2023 | $ 4,279 |
ATL Fairburn JV | Atlanta, GA | Real Estate Investment |  |
Real Estate [Line Items] |  |
Project (% owned) | 100.00% |
Approx. Developable Acres | a | 14 |
GAAP Investment Balance as of 9/30/2023 | $ 1,732 |
LXP Amount Funded as of 9/30/2023 | $ 1,740 |

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- Definition Carrying amount net of impairment reserves as of the balance sheet date primarily consisting of deposits for land purchases (including option payments), related acquisition costs, and land which is not expected to be developed in the next two years. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 976 -SubTopic 310 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482856/976-310-50-1 + Details
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