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Loans Held-for-Sale, Net (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) loan | Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($) | Feb. 28, 2022 USD ($)
Loans Held-for-Sale, Net |  |  |  |
Loans held-for-sale | $ 1,077,239 | $ 968,595 |  |
Fair value of future MSR | 19,318 | 21,600 |  |
Unearned discount | (2,948) | (3,276) |  |
Loans held-for-sale, net | 1,093,609 | 986,919 |  |
Sale of loans held-for-sale excluding acquired loans | 6,420,000 | 6,590,000 | $ 4,400,000 |
Gain on sale of loans held-for-sale, including fees | $ 123,000 | $ 94,600 | $ 65,700 |
Number of loans | loan | 580 | 328 |  |
Subordinate class of certificates retained | $ 210,728 | $ 140,124 |  |
Amortized cost of loans on nonaccrual status | 0 |  |  |
Held-to-maturity securities |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Subordinate class of certificates retained | 85,700 |  |  |
APL certificates |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Subordinate class of certificates retained | 149,368 | 63,627 |  |
APL certificates | Held-to-maturity securities |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Subordinate class of certificates retained | 149,400 | 63,600 |  |
Greater than 90 Days Past Due |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Past Due | $ 0 | 0 |  |
US Government Sponsored-Enterprise Insured Loans |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Period of loans held for sale sold | 60 days |  |  |
Fannie Mae |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Loans held-for-sale, net | $ 392,876 | 679,342 |  |
Private Label |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Loans held-for-sale, net | $ 507,918 | 56,186 |  |
Period of loans held for sale sold | 180 days |  |  |
Sale of loans held-for-sale excluding acquired loans | $ 985,100 | 727,200 |  |
Private Label | Subsequent Event [Member] |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Subordinate class of certificates retained |  |  |  | $ 489,300
Subordinate certificates | Subsequent Event [Member] |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Subordinate class of certificates retained |  |  |  | $ 43,400
Freddie Mac |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Loans held-for-sale, net | 112,561 | 180,004 |  |
FHA |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Loans held-for-sale, net | 54,532 | $ 53,063 |  |
SFR - Fixed Rate. |  |  |  |
Loans Held-for-Sale, Net |  |  |  |
Loans held-for-sale, net | $ 9,352 |  |  |

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