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Derivatives - Derivative Information about Carrying Value by Type on the Balance Sheet Location (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Derivative [Line Items] |  |
Derivative assets | $ 133,000 | $ 54,361,000
Derivative liabilities | 22,814,000 | 0
Margin Deposit Assets | 219,200,000 | 118,200,000
Variation Margin Receivable, Derivative | 10,400,000 | 1,300,000
TBA securities | Long position |  |
Derivative [Line Items] |  |
Derivative assets | 133,000 | 54,361,000
Derivative liabilities | 22,814,000 | 0
U.S. Treasury futures |  |
Derivative [Line Items] |  |
Derivative assets | 1,900,000 |
Derivative liabilities |  | 219,900,000
Interest rate swaps |  |
Derivative [Line Items] |  |
Derivative assets | $ 152,800,000 |
Derivative liabilities |  | $ 0

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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B + Details
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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 -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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