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Loans and Allowance for Credit Losses - CECL Allowance by CECL Allowances by loan portfolio geographical location (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Mortgages receivable, net |  |
Carrying Value | $ 375,220 | $ 376,991
% of Portfolio | 100.00% | 100.00%
New England |  |
Mortgages receivable, net |  |
Carrying Value | $ 158,731 | $ 179,421
% of Portfolio | 42.30% | 47.60%
Mid-Atlantic |  |
Mortgages receivable, net |  |
Carrying Value | $ 40,096 | $ 42,304
% of Portfolio | 10.70% | 11.20%
South |  |
Mortgages receivable, net |  |
Carrying Value | $ 176,393 | $ 151,165
% of Portfolio | 47.00% | 40.10%
West |  |
Mortgages receivable, net |  |
Carrying Value | $ 0 | $ 4,101
% of Portfolio | 0.00% | 1.10%

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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/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481628/310-20-40-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
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