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Investment Activity (Schedule of Cash Rents Received) (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Real Estate [Line Items]
Total rental income from cash basis operators	$ 63,318		$ 62,255		$ 191,265	$ 188,505
Cash Basis Lessees
Real Estate [Line Items]
Total rental income from cash basis operators	11,705		12,053		38,559	34,497
Lump sum payment		$ 2,500
Cash Basis Lessees | Bickford
Real Estate [Line Items]
Total rental income from cash basis operators	9,850		8,607		29,161	24,534
Lease income, rent deferral deduction				$ 2,500
Cash Basis Lessees | All others
Real Estate [Line Items]
Total rental income from cash basis operators	$ 1,855		$ 3,446		$ 9,398	$ 9,963

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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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 976
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477332/976-310-50-1

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