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Mortgage Loans on Real Estate (Narrative) (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) segment loan properties | Mar. 31, 2023 USD ($) loan | Dec. 31, 2023 USD ($) loan properties
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Number of portfolio segments that make up financing receivables | segment | 3 |  |
Commitments outstanding | $ 575,800 |  |
Accrued interest receivable | $ 62,800 |  | $ 69,500
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Accrued investment income (2024 and 2023 include $4,136 and $2,862 related to consolidated variable interest entities) |  |
Real estate owned, number of properties | properties | 14 |  | 12
Real estate owned | $ 9,700 |  | $ 6,500
Non-accrual status, number of loans | loan | 198 |  | 155
Interest income recognized on non-accrual loans | $ 270 | $ 15 |
Number of significant mortgage loan modifications | loan | 0 | 0 |
Minimum |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Number of days past due, nonperforming | 90 days |  |
Agricultural Mortgage Loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Accrued interest receivable written off | $ 0 | $ 0 |
Residential Mortgage Loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Accrued interest receivable written off | 0 | 0 |
Commercial Mortgage Loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Accrued interest receivable written off | $ 0 | $ 0 |

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- Definition Amount, after allowance for credit loss, of accrued interest on financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-3A + Details
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