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Loans and Investments - Investment Portfolio and Concentration of Credit Risk (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2023 USD ($) loan borrower | Dec. 31, 2022 USD ($) loan borrower | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Loans and Investments |  |  |  |
Loans and investments | $ 13,643,724 | $ 14,456,123 |  |
Allowance for credit losses | (153,077) | (132,559) | $ (116,382) | $ (113,241)
Unearned revenue | (59,662) | (68,890) |  |
Loans and investments, net | $ 13,430,985 | $ 14,254,674 |  |
Percent of Total | 100.00% | 100.00% |  |
Loan Count | loan | 715 | 747 |  |
Wtd. Avg. Pay Rate (as a percent) | 8.60% | 8.17% |  |
Wtd. Avg. Remaining Months to Maturity | 19 months 6 days | 20 months 18 days |  |
Wtd. Avg. First Dollar LTV Ratio (as percent) | 1.00% | 1.00% |  |
Wtd. Avg. Last Dollar LTV Ratio (as percent) | 76.00% | 76.00% |  |
Single-Family Rental |  |  |  |
Loans and Investments |  |  |  |
Allowance for credit losses | $ (973) | $ (781) | $ (421) | $ (320)
Concentration of Credit Risk |  |  |  |
Loans and Investments |  |  |  |
Loans and investments | $ 13,643,724 |  |  |
Wtd. Avg. First Dollar LTV Ratio (as percent) | 1.00% |  |  |
Wtd. Avg. Last Dollar LTV Ratio (as percent) | 76.00% |  |  |
Concentration of Credit Risk | Single-Family Rental |  |  |  |
Loans and Investments |  |  |  |
Loans and investments | $ 1,014,992 |  |  |
Percent of Total | 7.00% |  |  |
Wtd. Avg. First Dollar LTV Ratio (as percent) | 0.00% |  |  |
Wtd. Avg. Last Dollar LTV Ratio (as percent) | 63.00% |  |  |
Total Assets | Concentration of Credit Risk |  |  |  |
Loans and Investments |  |  |  |
Loan Count | loan | 84 | 38 |  |
Number of different borrowers | borrower | 5 | 5 |  |
Total Assets | Concentration of Credit Risk | Five Borrowers |  |  |  |
Loans and Investments |  |  |  |
Concentration risk, percentage | 11.00% | 11.00% |  |
Bridge loans |  |  |  |
Loans and Investments |  |  |  |
Loans and investments | $ 13,298,939 | $ 14,096,054 |  |
Percent of Total | 97.00% | 98.00% |  |
Loan Count | loan | 659 | 692 |  |
Wtd. Avg. Pay Rate (as a percent) | 8.62% | 8.17% |  |
Wtd. Avg. Remaining Months to Maturity | 18 months 9 days | 19 months 24 days |  |
Wtd. Avg. First Dollar LTV Ratio (as percent) | 0.00% | 0.00% |  |
Wtd. Avg. Last Dollar LTV Ratio (as percent) | 76.00% | 76.00% |  |
Bridge loans | Single-Family Rental |  |  |  |
Loans and Investments |  |  |  |
Number of loans under the loan portfolio | loan | 254 | 241 |  |
Total loan commitment | $ 1,630,000 | $ 1,570,000 |  |
Mezzanine loan |  |  |  |
Loans and Investments |  |  |  |
Loans and investments | $ 222,094 | $ 213,499 |  |
Percent of Total | 2.00% | 1.00% |  |
Loan Count | loan | 46 | 44 |  |
Wtd. Avg. Pay Rate (as a percent) | 8.15% | 8.13% |  |
Wtd. Avg. Remaining Months to Maturity | 60 months 21 days | 63 months 3 days |  |
Wtd. Avg. First Dollar LTV Ratio (as percent) | 44.00% | 42.00% |  |
Wtd. Avg. Last Dollar LTV Ratio (as percent) | 80.00% | 77.00% |  |
Preferred equity investments |  |  |  |
Loans and Investments |  |  |  |
Loans and investments | $ 89,725 | $ 110,725 |  |
Percent of Total | 1.00% | 1.00% |  |
Loan Count | loan | 7 | 8 |  |
Wtd. Avg. Pay Rate (as a percent) | 6.56% | 7.63% |  |
Wtd. Avg. Remaining Months to Maturity | 45 months 9 days | 39 months 6 days |  |
Wtd. Avg. First Dollar LTV Ratio (as percent) | 47.00% | 46.00% |  |
Wtd. Avg. Last Dollar LTV Ratio (as percent) | 84.00% | 79.00% |  |
Other loan |  |  |  |
Loans and Investments |  |  |  |
Loans and investments | $ 32,966 | $ 35,845 |  |
Percent of Total | 1.00% | 1.00% |  |
Loan Count | loan | 3 | 3 |  |
Wtd. Avg. Pay Rate (as a percent) | 9.23% | 8.76% |  |
Wtd. Avg. Remaining Months to Maturity | 29 months 15 days | 32 months 24 days |  |
Wtd. Avg. First Dollar LTV Ratio (as percent) | 0.00% | 0.00% |  |
Wtd. Avg. Last Dollar LTV Ratio (as percent) | 57.00% | 58.00% |  |
Other loan | Single-Family Rental |  |  |  |
Loans and Investments |  |  |  |
Number of loans under the loan portfolio | loan | 3 | 3 |  |
Unpaid principal balance, funded | $ 982,000 | $ 927,400 |  |

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