SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Real Estate-Related Securities and Other (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
RTL Common Stock
Debt Securities, Available-for-sale [Line Items]
Dividend income, equity securities operating	$ 822,000	$ 1,200,000	$ 2,000,000.0	$ 2,700,000

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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-URI https://asc.fasb.org/1943274/2147481800/320-10-50-3

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-3

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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-Topic 320
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-Topic 320
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-URI https://asc.fasb.org/1943274/2147481800/320-10-50-3

+ Details