Business Combinations Schedule of Income from Acquired Business (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	[1]	Dec. 31, 2021
Business Acquisition [Line Items]
Interest income			$ 370,172	$ 282,218		$ 175,505
Noninterest Income			169,199	(80,447)		19,562
Net income (loss) attributable to common stockholders			60,902	$ (85,339)		$ 125,346
Arlington Asset Investment Corp.
Business Acquisition [Line Items]
Interest income	$ 2,192
Noninterest Income	(1,110)
Net income (loss) attributable to common stockholders	$ (958)
Longbridge Financial LLC [Member]
Business Acquisition [Line Items]
Interest income		$ 2,859	18,913
Noninterest Income		39,935	118,512
Net income (loss) attributable to common stockholders		$ 14,492	$ 9,736

[1] Conformed to current period presentation.