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Loans Receivable and Other Lending Investments, net - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Jan. 01, 2020
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period |  |  | $ 28,634 |  |  |
Adoption of new accounting | $ 33,447 |  | 28,634 |  | $ 33,447 |
(Recovery of) provision for loan losses | (1,976) | $ (3,805) | 4,093 | $ (3,792) |  |
Allowance for loan losses at end of period | 33,447 |  | 33,447 |  |  |
Held to Maturity Debt Securities |  |  |  |  |  |
Allowance for loan losses at beginning of period | 111 |  | 0 |  |  |
Adoption of new accounting standard | 55 |  | 0 |  | 55 |
(Recovery of) Provision for loan losses | (56) |  | 35 |  |  |
Allowance for loan losses at end of period | 55 |  | 55 |  |  |
Total |  |  |  |  |  |
Allowance for loan losses at beginning of period | 35,612 |  | 28,634 |  |  |
Allowance For Credit Loss | 33,447 |  | 33,447 |  | 33,447 |
(Recovery of) Provision for loan losses | (2,165) |  | 4,084 |  |  |
Allowance for loan losses at end of period | 33,447 |  | 33,447 |  |  |
Increase to reserves for loan losses |  |  |  |  | 1,700 |
Recovery for loan losses | 2,000 |  | 4,100 |  |  |
Accounts Payable, Accrued Expenses, and Other Liabilities |  |  |  |  |  |
Total |  |  |  |  |  |
Increase to reserves for loan losses |  |  |  |  |  | $ 2,500
Recoveries for unfunded commitments | 700 |  | 900 |  |  |
Accrued Interest And Operating Lease Income Receivable, Net |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
(Recovery of) provision for loan losses | 900 |  | 900 |  |  |
ASU 2016-13 |  |  |  |  |  |
Total |  |  |  |  |  |
Increase to reserves for loan losses |  |  |  |  |  | 3,300
Period of Adoption, Adjustment |  |  |  |  |  |
Held to Maturity Debt Securities |  |  |  |  |  |
Adoption of new accounting standard |  |  |  |  |  | 20
Total |  |  |  |  |  |
Allowance For Credit Loss |  |  |  |  |  | 729
Construction Loans |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 11,736 |  | 6,668 |  |  |
Adoption of new accounting | 9,138 |  | 6,668 |  | 9,138 |
(Recovery of) provision for loan losses | (2,598) |  | 2,823 |  |  |
Allowance for loan losses at end of period | 9,138 |  | 9,138 |  |  |
Construction Loans | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Adoption of new accounting |  |  |  |  |  | (353)
Loans |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 905 |  | 265 |  |  |
Adoption of new accounting | 478 |  | 265 |  | 478 |
(Recovery of) provision for loan losses | (427) |  | 115 |  |  |
Allowance for loan losses at end of period | 478 |  | 478 |  |  |
Loans | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Adoption of new accounting |  |  |  |  |  | 98
Financing Receivables |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 1,159 |  | 0 |  |  |
Adoption of new accounting | 1,176 |  | 0 |  | 1,176 |
(Recovery of) provision for loan losses | 17 |  | 212 |  |  |
Allowance for loan losses at end of period | 1,176 |  | 1,176 |  |  |
Financing Receivables | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Adoption of new accounting |  |  |  |  |  | 964
Specific Allowance |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 21,701 |  | 21,701 |  |  |
Adoption of new accounting | 22,600 |  | 22,600 |  | $ 22,600 |
(Recovery of) provision for loan losses | 899 |  | 899 |  |  |
Allowance for loan losses at end of period | $ 22,600 |  | $ 22,600 |  |  |
Specific Allowance | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Adoption of new accounting |  |  |  |  |  | $ 0

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