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Warehouse Facilities Collateralized by U.S. Government Sponsored Enterprises (Details) - USD ($) | 2 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Feb. 01, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Securities Financing Transaction |  |  |
Warehouse facilities collateralized by U.S. Government Sponsored Enterprises |  | $ 817,033,000 | $ 1,061,202,000
Outstanding draws |  | 817,033,000 | 1,061,202,000
Committed Lines |  |  |
Securities Financing Transaction |  |  |
Lines available |  | 1,450,000,000 |
Uncommitted Lines |  |  |
Securities Financing Transaction |  |  |
Lines available |  | 400,000,000 |
Warehouse facility due October 8, 2021 |  |  |
Securities Financing Transaction |  |  |
Warehouse facilities collateralized by U.S. Government Sponsored Enterprises |  | 428,237,000 | 358,247,000
Outstanding draws |  | $ 428,237,000 | 358,247,000
Warehouse facility due October 8, 2021 | LIBOR |  |  |
Securities Financing Transaction |  |  |
Basis spread on variable rate (in percentage) |  | 1.40% |
Warehouse facility due October 8, 2021 | Committed Lines |  |  |
Securities Financing Transaction |  |  |
Lines available | $ 900,000,000 | $ 600,000,000 |
Warehouse credit facility increase (decrease) | $ 300,000,000 |  |
Warehouse facility due June 16, 2021 |  |  |
Securities Financing Transaction |  |  |
Warehouse facilities collateralized by U.S. Government Sponsored Enterprises |  | 14,244,000 | 292,040,000
Outstanding draws |  | $ 14,244,000 | 292,040,000
Warehouse facility due June 16, 2021 | LIBOR |  |  |
Securities Financing Transaction |  |  |
Basis spread on variable rate (in percentage) |  | 1.40% |
Warehouse facility due June 16, 2021 | Committed Lines |  |  |
Securities Financing Transaction |  |  |
Lines available |  | $ 450,000,000 |
Warehouse facility due September 25, 2021 |  |  |
Securities Financing Transaction |  |  |
Warehouse facilities collateralized by U.S. Government Sponsored Enterprises |  | 319,253,000 | 146,380,000
Outstanding draws |  | $ 319,253,000 | 146,380,000
Warehouse facility due September 25, 2021 | LIBOR |  |  |
Securities Financing Transaction |  |  |
Basis spread on variable rate (in percentage) |  | 1.40% |
Warehouse facility due September 25, 2021 | Committed Lines |  |  |
Securities Financing Transaction |  |  |
Lines available |  | $ 400,000,000 |
Fannie Mae repurchase agreement, open maturity |  |  |
Securities Financing Transaction |  |  |
Warehouse facilities collateralized by U.S. Government Sponsored Enterprises |  | 55,299,000 | 264,535,000
Outstanding draws |  | $ 55,299,000 | $ 264,535,000
Fannie Mae repurchase agreement, open maturity | LIBOR |  |  |
Securities Financing Transaction |  |  |
Basis spread on variable rate (in percentage) |  | 1.15% |
Fannie Mae repurchase agreement, open maturity | Uncommitted Lines |  |  |
Securities Financing Transaction |  |  |
Lines available |  | $ 400,000,000 |
Warehouse facility due June 16, 2021, sublimit | Committed Lines |  |  |
Securities Financing Transaction |  |  |
Lines available |  | $ 125,000,000 |
Warehouse facility due June 16, 2021, sublimit | Committed Lines | LIBOR |  |  |
Securities Financing Transaction |  |  |
Basis spread on variable rate (in percentage) |  | 2.00% |

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