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Commitments and Contingencies, Contractual Commitments (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Agency Business Commitments |  |  |  |
Cash collateral | $ 486,690 | $ 197,470 | $ 210,875 | $ 180,606
Debt Obligations |  |  |  |
2022 | 3,360,731 |  |  |
2023 | 1,886,918 |  |  |
2024 | 2,925,345 |  |  |
2025 | 1,109,257 |  |  |
2026 | 2,210,054 |  |  |
Thereafter | 640,185 |  |  |
Total | 12,132,490 |  |  |
Minimum Annual Operating Lease Payments |  |  |  |
2022 | 8,342 |  |  |
2023 | 8,067 |  |  |
2024 | 7,929 |  |  |
2025 | 7,978 |  |  |
2026 | 8,282 |  |  |
Thereafter | 26,098 |  |  |
Total | 66,696 |  |  |
Total |  |  |  |
2022 | 3,369,073 |  |  |
2023 | 1,894,985 |  |  |
2024 | 2,933,274 |  |  |
2025 | 1,117,235 |  |  |
2026 | 2,218,336 |  |  |
Thereafter | 666,283 |  |  |
Total | $ 12,199,186 |  |  |
Operating Lease, Weighted average remaining lease term (in years) | 8 years 2 months 12 days | 9 years |  |
Operating Lease, Weighted average discount rate (as a percent) | 4.00% | 4.90% |  |
Operating lease expense | $ 9,300 | $ 6,200 | $ 6,100 |
Unfunded CLO Commitments |  |  |  |
Unfunded commitments related to structured loans and investments | 975,200 |  |  |
Fannie Mae Mortgage |  |  |  |
Agency Business Commitments |  |  |  |
Minimum liquid assets to be maintained to meet operational liquidity requirements | $ 18,800 |  |  |
Period of funding for collateral requirement | 48 months |  |  |
Forward Contracts |  |  |  |
Agency Business Commitments |  |  |  |
Period of contractual commitment | 60 days |  |  |
Minimum |  |  |  |
Total |  |  |  |
Remaining lease term | 1 month 6 days | 6 months |  |
Maximum |  |  |  |
Total |  |  |  |
Remaining lease term | 9 years | 10 years |  |
Restricted liquidity arrangement - loans sold under the Fannie Mae DUS program | Fannie Mae Mortgage |  |  |  |
Agency Business Commitments |  |  |  |
Letter of credit assigned | $ 45,000 |  |  |
Cash collateral | 18,700 |  |  |
Reserve required to fund additional restricted liquidity over the next 48 months | $ 43,000 |  |  |
Period of additional funding for collateral requirement | 48 months |  |  |
Cash collateral arrangement - purchase and loss obligations under Freddie Mac's SBL Program |  |  |  |
Agency Business Commitments |  |  |  |
Cash collateral per securitization | $ 5,000 |  |  |
Outstanding letters of credit | $ 5,000 |  |  |

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