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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, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jan. 01, 2020
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period |  |  | $ 28,634 |  |  |
Adoption of new accounting | $ 35,612 |  | 35,612 |  | $ 35,612 |
Provision for loan losses | 2,067 | $ 110 | 6,070 | $ 13 |  |
Allowance for loan losses at end of period | 35,612 |  | 35,612 |  |  |
Held to Maturity Debt Securities |  |  |  |  |  |
Allowance for loan losses at beginning of period | 53 |  | 0 |  |  |
Adoption of new accounting standard | 111 |  | 0 |  | 111 |
Provision for loan losses | 58 |  | 91 |  |  |
Allowance for loan losses at end of period | 111 |  | 111 |  |  |
Total |  |  |  |  |  |
Allowance for loan losses at beginning of period | 33,264 |  | 28,634 |  |  |
Adoption of new accounting standard | 35,612 |  | 28,634 |  | 35,612 |
Provision for loan losses | 2,348 |  | 6,249 |  |  |
Allowance for loan losses at end of period | 35,612 |  | 35,612 |  |  |
Increase to reserves for loan losses |  |  |  |  | 2,400 |
Provision for loan losses | 2,300 |  |  |  |  |
Accounts Payable, Accrued Expenses, and Other Liabilities |  |  |  |  |  |
Total |  |  |  |  |  |
Increase to reserves for loan losses |  |  |  |  |  | $ 2,500
Expected recoveries for unfunded commitments | 300 |  | 200 |  |  |
ASU 2016-13 |  |  |  |  |  |
Total |  |  |  |  |  |
Increase to reserves for loan losses |  |  |  |  |  | 3,300
Provision for loan losses |  |  | 6,200 |  |  |
Period of Adoption, Adjustment |  |  |  |  |  |
Held to Maturity Debt Securities |  |  |  |  |  |
Adoption of new accounting standard |  |  |  |  |  | 20
Total |  |  |  |  |  |
Adoption of new accounting standard |  |  |  |  |  | 729
Construction Loans |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 9,724 |  | 6,668 |  |  |
Adoption of new accounting | 11,736 |  | 11,736 |  | 11,736 |
Provision for loan losses | 2,012 |  | 5,421 |  |  |
Allowance for loan losses at end of period | 11,736 |  | 11,736 |  |  |
Construction Loans | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Adoption of new accounting |  |  |  |  |  | (353)
Loans |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 686 |  | 265 |  |  |
Adoption of new accounting | 905 |  | 265 |  | 905 |
Provision for loan losses | 219 |  | 542 |  |  |
Allowance for loan losses at end of period | 905 |  | 905 |  |  |
Loans | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Adoption of new accounting |  |  |  |  |  | 98
Financing Receivables |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Allowance for loan losses at beginning of period | 1,100 |  | 0 |  |  |
Adoption of new accounting | 1,159 |  | 0 |  | 1,159 |
Provision for loan losses | 59 |  | 195 |  |  |
Allowance for loan losses at end of period | 1,159 |  | 1,159 |  |  |
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 | 21,701 |  | 21,701 |  | $ 21,701 |
Provision for loan losses | 0 |  | 0 |  |  |
Allowance for loan losses at end of period | $ 21,701 |  | $ 21,701 |  |  |
Specific Allowance | Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivables |  |  |  |  |  |
Adoption of new accounting |  |  |  |  |  | $ 0

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