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Other Assets and Liabilities - REO Information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 USD ($) shares | Dec. 31, 2021 USD ($) asset | Dec. 31, 2020 USD ($) asset | Dec. 31, 2019 USD ($) partnership | Dec. 31, 2018 partnership
Other Real Estate [Roll Forward] |  |  |  |  |
Balance at beginning of period | $ 8,413 | $ 8,413 | $ 9,462 |  |
Transfers to REO |  | 40,038 | 14,119 |  |
Liquidations |  | (12,642) | (14,622) |  |
Changes in fair value, net |  | 317 | (546) |  |
Balance at End of Period |  | 36,126 | 8,413 | $ 9,462 |
Realized loss from liquidation |  | $ 300 | $ 1,000 |  |
Number of REO properties recorded on balance sheet | asset |  | 34 | 17 |  |
Number of partnerships consolidated | partnership |  |  |  | 2 | 2
Co-investors gains (losses) |  | $ 2,000 | $ (200) | $ 1,000 |
Co-Investors Interests |  |  |  |  |
Other Real Estate [Roll Forward] |  |  |  |  |
Carrying value of interests |  | 26,000 |  |  |
Non-controlling interest in consolidated Point HEI entity |  |  |  |  |
Other Real Estate [Roll Forward] |  |  |  |  |
Carrying value of interests |  | 17,000 |  |  |
5 Arches, LLC |  |  |  |  |
Other Assets and Other Liabilities [Line Items] |  |  |  |  |
Shares issued for settlement of remaining deferred consideration | shares | 806,068 |  |  |  |
Cash payment for contingent consideration | $ 1,000 |  |  |  |
Legacy Sequoia |  |  |  |  |
Other Real Estate [Roll Forward] |  |  |  |  |
Balance at beginning of period | 638 | 638 | 460 |  |
Transfers to REO |  | 217 | 532 |  |
Liquidations |  | (956) | (243) |  |
Changes in fair value, net |  | 162 | (111) |  |
Balance at End of Period |  | $ 61 | $ 638 | 460 |
Number of REO properties recorded on balance sheet | asset |  | 2 | 3 |  |
Freddie Mac SLST(1) |  |  |  |  |
Other Real Estate [Roll Forward] |  |  |  |  |
Balance at beginning of period | 646 | $ 646 | $ 445 |  |
Transfers to REO |  | 3,268 | 1,319 |  |
Liquidations |  | (2,137) | (1,178) |  |
Changes in fair value, net |  | 251 | 60 |  |
Balance at End of Period |  | $ 2,028 | $ 646 | 445 |
Number of REO properties recorded on balance sheet | asset |  | 24 | 9 |  |
CAFL(1) |  |  |  |  |
Other Real Estate [Roll Forward] |  |  |  |  |
Balance at beginning of period | 2,529 | $ 2,529 | $ 1,670 |  |
Transfers to REO |  | 21,129 | 6,157 |  |
Liquidations |  | (2,034) | (4,371) |  |
Changes in fair value, net |  | (655) | (927) |  |
Balance at End of Period |  | $ 20,969 | $ 2,529 | 1,670 |
Number of REO properties recorded on balance sheet | asset |  | 3 | 2 |  |
Bridge Loan |  |  |  |  |
Other Real Estate [Roll Forward] |  |  |  |  |
Balance at beginning of period | $ 4,600 | $ 4,600 | $ 6,887 |  |
Transfers to REO |  | 15,424 | 6,111 |  |
Liquidations |  | (7,515) | (8,830) |  |
Changes in fair value, net |  | 559 | 432 |  |
Balance at End of Period |  | $ 13,068 | $ 4,600 | $ 6,887 |
Number of REO properties recorded on balance sheet | asset |  | 5 | 3 |  |

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