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Investment Activity (Assets Held for Sale and Long-Lived Assets) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) property | Dec. 31, 2022 USD ($) property | Dec. 31, 2021 USD ($)
Real Estate [Line Items] |  |  |
Rental income | $ 249,227 | $ 217,700 | $ 271,049
Impairment of property | $ 1,173 | 21,531 | 6,400
Real estate properties, impaired, sold or classified as held for sale | property | 3 |  |
Real estate assets held for development and sale | $ 500 |  |
Real Estate Investments |  |  |
Real Estate [Line Items] |  |  |
Impairment of property | $ 1,600 | $ 51,600 | 51,800
Real estate properties, impaired, sold or classified as held for sale | property | 4 | 19 |
Asset Held For Sale In 2023 |  |  |
Real Estate [Line Items] |  |  |
Rental income | $ 1,700 | $ 900 | $ 1,100
Asset Held For Sale In 2022 |  |  |
Real Estate [Line Items] |  |  |
Rental income | $ 2,100 | $ 5,600 |

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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-2 + Details
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- Definition Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479773/842-30-50-5 + 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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