Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021
Cash flows provided by (used in) operating activities:
Shares issued in connection with incentive fee payment (non-cash)		$ 325	$ 716
Share-based Payment Arrangement, Noncash Expense		1,019	0
Net cash provided by (used in) operating activities		70,204	58,832
Cash Flows from Investing Activities:
Purchase of securities		(1,034,217)	(1,770,962)
Purchase of loans		(2,758,684)	(1,225,176)
Capital improvements of real estate owned		(137)	(2,205)
Proceeds from disposition of securities		1,069,959	1,090,836
Proceeds from disposition of loans		27,502	1,064
Contributions to investments in unconsolidated entities		(15,254)	(9,171)
Distributions from investments in unconsolidated entities		202,818	119,395
Proceeds from disposition of real estate owned		5,198	1,335
Proceeds from principal payments of securities		259,252	357,692
Proceeds from principal payments of loans		484,637	225,426
Proceeds from investments sold short		776,902	377,784
Repurchase of securities sold short		(675,663)	(384,275)
Payments on financial derivatives		(86,868)	(41,821)
Proceeds from financial derivatives		165,384	41,283
Payments made on reverse repurchase agreements		(26,676,129)	(15,049,417)
Proceeds from reverse repurchase agreements		26,592,168	15,046,818
Due from brokers, net		17,949	(628)
Due to brokers, net		59,325	(82)
Net cash provided by (used in) investing activities		(1,585,858)	(1,222,104)
Cash flows provided by (used in) financing activities:
Net proceeds from issuance of common stock	[1]	53,342	141,619
Proceeds from Issuance of Preferred Stock and Preference Stock	[1]	511	0
Offering costs paid		(757)	(482)
Payments for Repurchase of Common Stock		(1,659)	0
Dividends paid		(91,459)	(58,469)
Contributions from non-controlling interests		11,853	10,744
Distributions to non-controlling interests		(16,206)	(20,342)
Proceeds from issuance of other secured borrowings		15,063	64,837
Principal payments on other secured borrowings		(27,066)	(25,718)
Borrowings under repurchase agreements		9,074,510	4,131,514
Repayments of repurchase agreements		(8,392,715)	(3,482,991)
Proceeds from Issuance of Unsecured Debt		206,385	0
Repayments of Unsecured Debt		(86,000)	0
Proceeds from Issuance of Other Secured Borrowings, at fair value		857,578	534,477
Repayments of Other secured borrowings, at fair value		0	(111,529)
Due from brokers, net		(5,393)	(26,700)
Due to brokers, net		61	(1,718)
Net cash provided by (used in) financing activities		1,598,048	1,155,242
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash		82,394	(8,030)
Cash, Cash Equivalents, and Restricted Cash, Beginning of Period		92,836	111,822
Cash, Cash Equivalents, and Restricted Cash, End of Period		175,230	103,792
Supplemental disclosure of cash flow information:
Interest paid		75,005	34,531
Income tax paid		144	2,485
Dividends payable		11,732	9,149
Shares issued in connection with incentive fee payment (non-cash)		325	716
Share-based Payment Arrangement, Noncash Expense		1,019	0
Transfers from mortgage loans to real estate owned (non-cash)		1,018	14,033
Transfers from mortgage loans to investments in non-consolidated entities (non-cash)		209,965	82,837
Transfers from corporate loans to investments in unconsolidated entities (non-cash)		1,000	0
Purchase of Loans Non Cash		0	800
Principal payments on Other secured borrowings, at fair value (non-cash)		(259,899)	(341,503)
Proceeds received from Other secured borrowings, at fair value (non-cash)		255,914	40,670
Principal payments on Other secured borrowings (non-cash)		(43,719)	0
Proceeds from issuance of Other secured borrowings (non-cash)		0	800
Proceeds from principal payments of investments (non-cash)		267,368	341,503
Repayments of repurchase agreement (non-cash)		$ (256,539)	$ (39,618)

[1] Net of discounts and commissions.