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Loans Receivable and Other Lending Investments, net (Loan Receivable Held for Sale) (Details) - USD ($) $ in Thousands | 1 Months Ended | 7 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2021 | May 31, 2019
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Income from sales of real estate |  |  |  | $ 26,319 | $ 6,318 | $ 11,969 |  |
Purchase price for properties acquired |  |  |  |  |  |  |  | $ 44,100
Loan receivable held for sale |  |  |  | $ 43,215 |  |  |  |
Safehold Inc. |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Amount of loan funded |  | $ 16,100 |  |  |  |  |  |
Deferred purchase price |  | 11,900 |  |  |  |  |  |
Leasehold improvement allowance |  | $ 52,000 |  |  |  |  |  |
Payment of deferred purchase price |  |  | $ 6,000 |  |  |  |  |
Consideration received | $ 22,100 |  |  |  |  |  |  |
Income from sales of real estate | $ 0 |  |  |  |  |  |  |
Loans Receivable Held-for-sale |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Loan receivable held for sale |  |  |  |  |  |  | $ 42,000 |

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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228 + Details
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