Repurchase Agreements (Details) $ in Thousands	Mar. 31, 2023 USD ($) counterparty	Dec. 31, 2022 USD ($)
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 2,937,124	$ 2,644,405
Weighted Average Rate	4.92%	4.18%
Fair Value of Collateral Pledged	$ 3,012,970	$ 2,810,957
Due to counterparties	24,918	4,159
Due to counterparties	$ 24,918	4,159
Number of counterparties \| counterparty	25
Residential Mortgage Backed Securities [Member] \| Agency MBS
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 2,675,157	$ 2,349,181
Weighted Average Rate	4.90%	4.15%
Fair Value of Collateral Pledged	$ 2,724,745	$ 2,496,781
Commercial Mortgage Backed Securities [Member] \| Agency MBS
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 98,373	$ 108,580
Weighted Average Rate	4.89%	3.76%
Fair Value of Collateral Pledged	$ 102,710	$ 108,146
Interest-Only-Strip [Member] \| Agency MBS
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 128,819	$ 137,569
Weighted Average Rate	5.23%	4.62%
Fair Value of Collateral Pledged	$ 145,157	$ 150,517
Interest-Only-Strip [Member] \| Non-Agency MBS
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 34,775	$ 49,075
Weighted Average Rate	5.76%	5.26%
Fair Value of Collateral Pledged	$ 40,358	$ 55,513

Number of lending counterparties with whom the Company has amounts outstanding as of reporting period.

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- Definition

Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets.

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Amount of other payables due to broker-dealers or clearing organizations.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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Carrying amount of financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

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