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Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Statistics for Loan Portfolio (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 USD ($) loan | Dec. 31, 2021 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of loans | loan | 61 | 67
Principal balance | $ 8,708,214 | $ 7,890,848
Carrying value, net | 8,681,990 | 7,857,260
Unfunded loan commitments | $ 1,041,654 | $ 1,357,122
Weighted-average cash coupon | 7.20% | 4.50%
Weighted-average remaining fully-extended term | 2 years 9 months 18 days | 2 years 10 months 24 days
Weighted-average expected term | 1 year 8 months 12 days | 2 years 3 months 18 days
Interest rate used in calculating weighted-average cash coupon for non-accrual or cost recovery loans | 0.00% | 0.00%
Principal balance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Principal balance | $ 8,892,767 | $ 8,072,377

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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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
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- Definition The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(c)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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