Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets [Abstract]
Cash and cash equivalents	$ 268,296	$ 119,639
Cash collateral posted to counterparties	137,296	118,225
Mortgage-backed securities (including pledged of $6,767,948 and $5,880,747, respectively), at fair value	7,327,643	6,038,948
Due from counterparties	28,973	1,313
Derivative assets	4,138	54,361
Accrued interest receivable	31,766	28,727
Other assets, net	18,062	8,537
Total assets	7,816,174	6,369,750
Liabilities:
Repurchase agreements	6,423,890	5,381,104
Due to counterparties	167,609	95
Derivative liabilities	3,662	0
Cash collateral posted by counterparties	7,895	46,001
Accrued interest payable	48,570	53,194
Accrued dividends payable	13,684	10,320
Other liabilities	8,304	8,301
Total liabilities	6,673,614	5,499,015
Preferred Stock, Liquidation Preference, Value	111,500	111,500
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value $0.01 per share; 50,000,000 shares authorized; 4,460,000 and 4,460,000 shares issued and outstanding, respectively ($111,500 and $111,500 aggregate liquidation preference, respectively)	107,843	107,843
Common stock, par value $0.01 per share, 180,000,000 shares authorized; 79,294,324 and 57,038,247 shares issued and outstanding, respectively	793	570
Additional paid-in capital	1,677,062	1,404,431
Accumulated other comprehensive loss	(135,889)	(158,502)
Accumulated deficit	(507,249)	(483,607)
Total shareholders’ equity	1,142,560	870,735
Total liabilities and shareholders’ equity	$ 7,816,174	$ 6,369,750