Net Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest income	$ 90,775	$ 57,540	$ 174,666	$ 114,676
Interest expense	71,731	42,404	137,759	81,739
Total net interest income	19,044	15,136	36,907	32,937
Senior unsecured notes
Senior unsecured notes	1,676	1,618	3,302	3,232
Subordinated debentures
Subordinated debentures	1,071	1,023	2,144	1,985
Residential loans
Interest income	11,798	12,290	23,486	29,244
Consolidated SLST \| VIE, Primary Beneficiary
Interest income	9,154	8,440	17,281	17,173
Interest expense	6,752	5,966	12,553	12,280
Residential loans held in securitization trusts
Interest income	30,101	25,136	57,032	49,857
Total residential loans
Interest income	51,053	45,866	97,799	96,274
Investment securities available for sale
Investment securities available for sale	35,450	7,491	68,354	10,659
Multi-family loans
Interest income	2,669	2,742	5,311	5,179
Other
Other	1,603	1,441	3,202	2,564
Repurchase agreements
Interest expense	41,580	16,847	80,733	29,915
Residential Loan Securitizations
Interest expense	20,652	16,950	39,027	34,327
Total collateralized debt obligations
Interest expense	$ 27,404	$ 22,916	$ 51,580	$ 46,607

Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

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