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Loans - Schedule of Credit Quality Information on Residential Mortgage Loans (Details) - Residential Portfolio Segment $ in Thousands | Dec. 31, 2025 USD ($) loan | Dec. 31, 2024 USD ($) loan
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 8,251,113 | $ 6,781,862
Loan count | loan | 31,561 | 18,876
Mortgage loans 90+ days delinquent | $ 54,000 | $ 51,900
Mortgage loans in process of foreclosure | 57,100 | 57,900
Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 7,998,723 | 6,522,024
30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 96,162 | 102,528
60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 39,171 | 38,657
90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 115,917 | 116,637
Residential Mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 194,046 | $ 216,547
Loan count | loan | 1,459 | 1,530
Residential Mortgage | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 172,066 | $ 205,867
Residential Mortgage | 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 2,143 | 1,808
Residential Mortgage | 60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 1,112 | 1,162
Residential Mortgage | 90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 17,585 | 5,694
Non-Agency Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 36,578 | $ 13,098
Loan count | loan | 53 | 24
Non-Agency Loans | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 16,468 | $ 4,967
Non-Agency Loans | 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 1,444 | 1,275
Non-Agency Loans | 60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 1,112 | 1,162
Non-Agency Loans | 90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 17,554 | 5,694
Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 135,804 | $ 99,863
Loan count | loan | 1,368 | 1,292
Home Equity Loans | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 135,773 | $ 99,838
Home Equity Loans | 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 0 | 25
Home Equity Loans | 60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 0 | 0
Home Equity Loans | 90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 31 | 0
Re- and Non-Performing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 1,140 | 2,016
Agency-Eligible Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 20,524 | $ 101,570
Loan count | loan | 38 | 214
Agency-Eligible Loans | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 19,825 | $ 101,062
Agency-Eligible Loans | 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 699 | 508
Agency-Eligible Loans | 60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 0 | 0
Agency-Eligible Loans | 90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 0 | 0
Securitized Residential Mortgage Loans | Residential Mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 8,057,067 | $ 6,565,315
Loan count | loan | 30,102 | 17,346
Securitized Residential Mortgage Loans | Residential Mortgage | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 7,826,657 | $ 6,316,157
Securitized Residential Mortgage Loans | Residential Mortgage | 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 94,019 | 100,720
Securitized Residential Mortgage Loans | Residential Mortgage | 60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 38,059 | 37,495
Securitized Residential Mortgage Loans | Residential Mortgage | 90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 98,332 | 110,943
Securitized Residential Mortgage Loans | Non-Agency Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 7,026,365 | $ 6,382,814
Loan count | loan | 18,430 | 16,087
Securitized Residential Mortgage Loans | Non-Agency Loans | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 6,833,324 | $ 6,183,680
Securitized Residential Mortgage Loans | Non-Agency Loans | 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 76,326 | 86,606
Securitized Residential Mortgage Loans | Non-Agency Loans | 60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 32,323 | 33,793
Securitized Residential Mortgage Loans | Non-Agency Loans | 90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 84,392 | 78,735
Securitized Residential Mortgage Loans | Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 874,718 |
Loan count | loan | 10,599 |
Securitized Residential Mortgage Loans | Home Equity Loans | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 869,432 |
Securitized Residential Mortgage Loans | Home Equity Loans | 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 2,963 |
Securitized Residential Mortgage Loans | Home Equity Loans | 60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 489 |
Securitized Residential Mortgage Loans | Home Equity Loans | 90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 1,834 |
Securitized Residential Mortgage Loans | Re- and Non-Performing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 155,984 | $ 182,501
Loan count | loan | 1,073 | 1,259
Securitized Residential Mortgage Loans | Re- and Non-Performing Loans | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 123,901 | $ 132,477
Securitized Residential Mortgage Loans | Re- and Non-Performing Loans | 30-59 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 14,730 | 14,114
Securitized Residential Mortgage Loans | Re- and Non-Performing Loans | 60-89 Days |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | 5,247 | 3,702
Securitized Residential Mortgage Loans | Re- and Non-Performing Loans | 90+ Days (2) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unpaid Principal Balance | $ 12,106 | $ 32,208

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