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Mortgage and Other Notes Receivable (Narrative) (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
May 05, 2025 USD ($) unit | Feb. 28, 2025 USD ($) | Jun. 30, 2025 USD ($) | Mar. 31, 2025 USD ($) unit property facility loan | Mar. 31, 2024 USD ($) | May 01, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2021 property
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Number of health care properties related to mortgage notes receivables | property |  |  |  | 15 |  |  |  |
Credit loss reserve |  |  |  | $ (18,910) |  |  | $ (20,249) |
Financing receivable, non-performing loans | loan |  |  |  | 2 |  |  |  |
Financing receivable, non-performing loans in mortgage note receivable | loan |  |  |  | 3 |  |  |  |
Loans and leases agreement |  |  |  | $ 151,300 |  |  |  |
Number of underlying properties | property |  |  |  | 1 |  |  |  |
Interest income and other |  |  |  | $ 6,491 | $ 6,070 |  |  |
Increase rate in the amount of loss from a default |  |  |  | 20.00% |  |  |  |
Effective adjustment rate |  |  |  | 40.00% |  |  |  |
Senior Living Management | Subsequent Event | SLM |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Amount |  |  |  |  |  | $ 14,500 |  |
Repayments of Secured Debt | $ 2,500 |  |  |  |  |  |  |
Credit loss expense |  |  | $ 1,300 |  |  |  |  |
Vizion Health |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  | $ 18,000 |  |  |  |
Mezzanine loan agreement |  |  |  | $ 5,300 |  |  |  |
Interest rate on loan |  |  |  | 0.0915 |  |  |  |
Montecito Medical Real Estate |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Mortgage and other notes receivable, net |  |  |  | $ 9,400 |  |  |  |
Interest income and other |  |  |  | 500 |  |  |  |
Loans and leases agreement |  |  |  | 50,000 |  |  |  |
Principal repaid |  |  |  | 6,200 |  |  |  |
Encore Senior Living | Subsequent Event |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans and leases agreement | $ 28,000 |  |  |  |  |  |  |
Number of units in real estate property | unit | 84 |  |  |  |  |  |  |
Annual interest rate from master credit agreement | 9.00% |  |  |  |  |  |  |
Bickford |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Mortgage and other notes receivable, net |  |  |  | $ 16,044 |  |  |  |
Properties | facility |  |  |  | 38 |  |  |  |
Interest income and other |  |  |  | $ 300 | 300 |  |  |
Repayments of term loan |  |  |  | 100 | 100 |  |  |
Senior Living Communities, LLC (“Senior Living”) |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Mortgage and other notes receivable, net |  |  |  | 47,686 |  |  |  |
Revolving amount line of credit |  |  |  | $ 15,000 |  |  |  |
Loans receivable facility bears interest rate |  |  |  | 8.00% |  |  |  |
Financing receivable, renewal term |  |  |  | 1 year |  |  |  |
Purchase option at a stated minimum price |  |  |  | $ 38,300 |  |  |  |
Nonperforming Financial Instruments |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Credit loss reserve |  |  |  | (14,600) |  |  | (16,100) |
Interest income and other |  |  |  | 100 | $ 500 |  |  |
Mezzanine |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Credit loss reserve |  | $ (8,600) |  |  |  |  |  |
Mezzanine | SLM |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Credit loss reserve |  |  |  | (10,000) |  |  |  |
Mezzanine | Bickford |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Credit loss reserve |  |  |  | (1,300) |  |  |  |
Mezzanine | Senior Living Management |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Mortgage and other notes receivable, net of reserve |  | $ 10,000 |  |  |  |  |  |
Nonperforming Financial Instruments |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  | 15,844 |  |  |  |
Nonperforming Financial Instruments | between 1.0x and 1.5x |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  | 15,844 |  |  |  |
Nonperforming Financial Instruments | between 1.0x and 1.5x | SLM |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  | 14,500 |  |  |  |
Secured By Real Estate |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  | 173,400 |  |  | 175,800 |
Not Secured By Real Estate |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  |  |  |  | $ 113,400 |
Mortgage and other notes receivable, net |  |  |  | $ 105,300 |  |  |  |
Property Held by Fund | Montecito Medical Real Estate |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Properties | property |  |  |  | 5 |  |  |  |
Combined purchase price of medical office buildings |  |  |  | $ 56,700 |  |  |  |
Fully Funded | Bickford |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans and leases agreement |  |  |  | $ 14,700 |  |  |  |
Number of construction loans | loan |  |  |  | 1 |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Bickford |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Note receivable interest rate |  |  |  | 10.00% |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Unlikely to be Collected Financing Receivable | Bickford Note Investment |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Mortgage increase from sale of real estate |  |  |  | $ (12,100) |  |  |  |
Negotiations to sale | Bickford |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Properties | property |  |  |  |  |  |  |  | 6
July 2019 Transaction | Senior Living Communities, LLC (“Senior Living”) |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans and leases agreement |  |  |  | $ 32,700 |  |  |  |
Annual interest rate from master credit agreement |  |  |  | 7.25% |  |  |  |
June 2019 Transaction | Senior Living Communities, LLC (“Senior Living”) |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Number of units in real estate property | unit |  |  |  | 248 |  |  |  |

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