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Loans Receivable - Collective Pool Basis (Details) $ in Thousands | Mar. 31, 2022 USD ($) loan | Dec. 31, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
--- | --- | --- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Loan Carrying Value | $ 1,407,852 |  |  |
Allowance for Credit Loss | (165,693) | $ (166,785) | $ (224,146) | $ (224,036)
Real estate loans receivable, net of credit allowance | $ 1,242,159 |  |  |
No. of Loans | loan | 55 |  |  |
Deteriorated loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Loan Carrying Value | $ 174,841 |  |  |
Allowance for Credit Loss | (148,438) |  |  |
Real estate loans receivable, net of credit allowance | $ 26,403 |  |  |
No. of Loans | loan | 3 |  |  |
Collective loan pool |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Loan Carrying Value | $ 209,774 |  |  |
Allowance for Credit Loss | (2,982) |  |  |
Real estate loans receivable, net of credit allowance | $ 206,792 |  |  |
No. of Loans | loan | 15 |  |  |
Collective loan pool |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Loan Carrying Value | $ 22,800 |  |  |
Allowance for Credit Loss | (325) |  |  |
Real estate loans receivable, net of credit allowance | $ 22,475 |  |  |
No. of Loans | loan | 2 |  |  |
Collective loan pool |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Loan Carrying Value | $ 22,084 |  |  |
Allowance for Credit Loss | (315) |  |  |
Real estate loans receivable, net of credit allowance | $ 21,769 |  |  |
No. of Loans | loan | 4 |  |  |
Collective loan pool |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Loan Carrying Value | $ 50,563 |  |  |
Allowance for Credit Loss | (721) |  |  |
Real estate loans receivable, net of credit allowance | $ 49,842 |  |  |
No. of Loans | loan | 6 |  |  |
Collective loan pool |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Loan Carrying Value | $ 894,186 |  |  |
Allowance for Credit Loss | (12,433) |  |  |
Real estate loans receivable, net of credit allowance | $ 881,753 |  |  |
No. of Loans | loan | 20 |  |  |
Collective loan pool |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Loan Carrying Value | $ 33,604 |  |  |
Allowance for Credit Loss | (479) |  |  |
Real estate loans receivable, net of credit allowance | $ 33,125 |  |  |
No. of Loans | loan | 5 |  |  |

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