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Residential Consumer Loans - Characteristics of Residential Consumer Loans Held-for-Sale (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) loan | Dec. 31, 2023 USD ($) loan
Residential Consumer Loans |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Number of loans | loan | 448 | 874
Unpaid principal balance | $ 508,708 | $ 916,877
Fair value of loans | 511,706 | 911,192
Market value of loans pledged as collateral under short-term borrowing agreements | $ 507,450 | $ 907,742
Weighted average coupon | 6.74% | 6.25%
Residential Loans at Fair Value | Financing Receivables, Equal to Greater than 90 Days Past Due |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Number of loans in foreclosure | loan | 0 | 0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 29 -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 948 -SubTopic 310 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479851/948-310-S99-1 + Details
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