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Loans Receivable and Other Lending Investments, net (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020 | Jan. 01, 2020
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period |  |  | $ 13,170 |  |  |
(Recovery of) provision for loan losses | $ (2,263) | $ 2,067 | (6,057) | $ 6,070 |  |
Allowance for loan losses at end of period | 7,135 |  | 7,135 |  |  |
Held to Maturity Debt Securities |  |  |  |  |  |
Allowance for loan losses at beginning of period | 2,685 | 53 | 3,093 |  |  |
(Recovery of) Provision for loan losses | (292) | 58 | (700) | 91 |  |
Allowance for loan losses at end of period | 2,393 | 111 | 2,393 | 111 |  |
Total |  |  |  |  |  |
Allowance for loan losses at beginning of period | 9,058 | 33,264 | 13,170 | 28,634 |  |
(Recovery of) Provision for loan losses | (1,923) | 2,348 | (6,035) | 6,249 |  |
Allowance for loan losses at end of period | 7,135 | 35,612 | 7,135 | 35,612 |  |
Increase to reserves for loan losses | 1,000 |  | 1,000 |  | $ 1,000 |
Provision for (recovery of) loan losses | (2,300) | 2,100 | (6,100) | 6,100 |  |
Accounts Payable, Accrued Expenses and Other Liabilities |  |  |  |  |  |
Total |  |  |  |  |  |
Increase to reserves for loan losses |  |  |  |  |  | $ 2,500
Recoveries for unfunded commitments | 400 | 300 |  | 200 |  |
ASU 2016-13 |  |  |  |  |  |
Total |  |  |  |  |  |
Increase to reserves for loan losses |  |  |  |  |  | $ 3,300
Period of Adoption, Adjustment |  |  |  |  |  |
Held to Maturity Debt Securities |  |  |  |  |  |
Allowance for loan losses at beginning of period |  |  |  | 20 |  |
Total |  |  |  |  |  |
Allowance for loan losses at beginning of period |  |  |  | 729 |  |
Construction Loans |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 2,893 | 9,724 | 6,541 | 6,668 |  |
(Recovery of) provision for loan losses | (1,253) | 2,012 | (4,901) | 5,421 |  |
Allowance for loan losses at end of period | 1,640 | 11,736 | 1,640 | 11,736 |  |
Construction Loans | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period |  |  |  | (353) |  |
Loans |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 1,815 | 686 | 1,643 | 265 |  |
(Recovery of) provision for loan losses | (196) | 219 | (24) | 542 |  |
Allowance for loan losses at end of period | 1,619 | 905 | 1,619 | 905 |  |
Loans | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period |  |  |  | 98 |  |
Financing receivables (refer to Note 5) |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 998 | 1,100 | 1,150 |  |  |
(Recovery of) provision for loan losses | (105) | 59 | (257) | 195 |  |
Allowance for loan losses at end of period | 893 | 1,159 | 893 | 1,159 |  |
Financing receivables (refer to Note 5) | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period |  |  |  | 964 |  |
Specific receivables |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 667 | 21,701 | 743 | 21,701 |  |
(Recovery of) provision for loan losses | (77) |  | (153) |  |  |
Allowance for loan losses at end of period | $ 590 | $ 21,701 | $ 590 | $ 21,701 |  |

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