CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	874,300	874,300
Common stock, shares issued (in shares)	101,912	101,802
Common stock, shares outstanding (in shares)	101,912	101,802
Asset Pledged as Collateral with Right
Residential whole loans	$ 6,074,232	$ 5,727,524
Asset Pledged as Collateral
Financial instruments, at fair value	4,147,712	3,898,744
Non-Agency MBS Transferred to Consolidated VIEs
Residential whole loans	$ 4,600,000	$ 4,000,000
Series B Preferred Stock
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, dividend rate	7.50%	7.50%
Preferred stock, shares authorized (in shares)	8,050	8,050
Preferred stock, shares issued (in shares)	8,000	8,000
Preferred stock, shares outstanding (in shares)	8,000	8,000
Preferred stock, liquidation preference, value	$ 200,000	$ 200,000
Series C Preferred Stock
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, dividend rate	6.50%	6.50%
Preferred stock, shares authorized (in shares)	12,650	12,650
Preferred stock, shares issued (in shares)	11,000	11,000
Preferred stock, shares outstanding (in shares)	11,000	11,000
Preferred stock, liquidation preference, value	$ 275,000	$ 275,000