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v3.19.1

Investment in and Advances to Non-Consolidated Entities - Additional Information (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2018 USD ($) property | Feb. 28, 2017 USD ($) | Jan. 31, 2016 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Jan. 31, 2017
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Aggregate gain on sale of properties |  |  |  | $ 252,913 | $ 63,428 | $ 81,510 |
Impairment charges on real estate |  |  |  | 36,620 | 18,023 |  |
Investment advisory fees |  |  |  | 30,608 | 31,809 | 31,431 |
Lexington Reality Advisors Inc [Member] | Investment Advice [Member] |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Investment advisory fees |  |  |  | $ 1,443 | 807 | $ 693 |
Palm Beach Gardens, Florida [Member] |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Impairment charges on real estate |  |  |  |  | $ 3,512 |  |
Oklahoma City, Oklahoma [Member] | Tenant-in-Common [Member] |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Proceeds from divestiture of interest in joint venture |  | $ 6,198 |  |  |  |  |
Co-venture equity ownership percentage |  |  |  |  |  |  | 40.00%
Aggregate gain on sale of properties |  | 1,452 |  |  |  |  |
Office Building [Member] |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Proceeds from divestiture of interest in joint venture | $ 4,312 |  |  |  |  |  |
Number of properties sold | property | 6 |  |  |  |  |  |
Aggregate gain on sale of properties |  | $ 1,777 |  |  |  |  |
Office Building [Member] | Russellville, Arkansas [Member] |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Proceeds from divestiture of interest in joint venture |  |  | $ 6,681 |  |  |  |
Aggregate gain on sale of properties |  |  | $ 5,378 |  |  |  |

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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