Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows from Operating Activities:
Net income	$ 59,761	$ 384,314
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of deferred financing costs, premiums and discounts on secured borrowings	13,205	11,816
Amortization of discounts and deferred financing costs on unsecured senior notes	2,234	2,151
Accretion of net discount on investment securities	(2,094)	(3,475)
Accretion of net deferred loan fees and discounts	(15,180)	(16,600)
Share-based compensation	10,936	10,093
Manager fees paid in stock	7,233	25,417
Change in fair value of investment securities	(82)	355
Change in fair value of consolidated VIEs	(4,245)	11,928
Change in fair value of servicing rights	(304)	(1,084)
Change in fair value of loans	(8,901)	125,783
Change in fair value of affordable housing fund investments	(1,160)	(223,851)
Change in fair value of derivatives	48,431	(129,343)
Foreign currency (gain) loss, net	(15,019)	27,281
Gain on sale of investments and other assets	(190)	(98,468)
Impairment charges on properties and related intangibles	0	55
Credit loss provision (reversal), net	43,194	(3,658)
Depreciation and amortization	13,635	12,757
(Earnings) loss from unconsolidated entities	(2,725)	910
Distributions of earnings from unconsolidated entities	243	280
Loss on extinguishment of debt	61	624
Origination and purchase of loans held-for-sale, net of principal collections	(28,333)	(2,206,360)
Proceeds from sale of loans held-for-sale	13,439	2,278,467
Changes in operating assets and liabilities:
Related-party payable	(1,603)	(19,756)
Accrued and capitalized interest receivable, less purchased interest	(41,541)	(35,342)
Other assets	(89,667)	(64,229)
Accounts payable, accrued expenses and other liabilities	(29,886)	64,309
Net cash (used in) provided by operating activities	(28,558)	154,374
Cash Flows from Investing Activities:
Origination, purchase and funding of loans held-for-investment	(431,615)	(1,557,821)
Proceeds from principal collections on loans	407,199	798,969
Purchase and funding of investment securities	(591)	(18,139)
Proceeds from principal collections on investment securities	40,778	7,784
Proceeds from sales of real estate	543	147,334
Purchases and additions to properties and other assets	(5,839)	(6,604)
Investments in unconsolidated entities	0	(461)
Distribution of capital from unconsolidated entities	277	121
Payments for purchase or termination of derivatives	(3,340)	(8,541)
Proceeds from termination of derivatives	5,605	82,596
Net cash provided by (used in) investing activities	13,017	(554,762)
Cash Flows from Financing Activities:
Proceeds from borrowings	1,202,077	5,843,167
Principal repayments on and repurchases of borrowings	(892,238)	(5,153,638)
Payment of deferred financing costs	(2,924)	(21,998)
Proceeds from common stock issuances	1,269	251
Payment of equity offering costs	0	(89)
Payment of dividends	(149,765)	(146,709)
Contributions from non-controlling interests	0	4,690
Distributions to non-controlling interests	(9,390)	(10,718)
Repayment of debt of consolidated VIEs	(108)	(84,460)
Distributions of cash from consolidated VIEs	15,329	22,014
Net cash provided by financing activities	164,250	452,510
Net increase in cash, cash equivalents and restricted cash	148,709	52,122
Cash, cash equivalents and restricted cash, beginning of period	382,133	321,914
Effect of exchange rate changes on cash	594	(262)
Cash, cash equivalents and restricted cash, end of period	531,436	373,774
Supplemental disclosure of cash flow information:
Cash paid for interest	322,932	102,300
Income taxes paid, net	42	566
Supplemental disclosure of non-cash investing and financing activities:
Dividends declared, but not yet paid	152,551	148,998
Consolidation of VIEs (VIE asset/liability additions)	0	1,109,614
Deconsolidation of VIEs (VIE asset/liability reductions)	0	730,012
Loan principal collections temporarily held at master servicer	15,197	42,225
Reclassification of loans held-for-investment to loans held-for-sale	$ 0	$ 346