Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities:
Net income	$ 208,954	$ 221,884
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Amortization of deferred financing costs, premiums and discounts on secured financing agreements and secured borrowings on transferred loans	17,439	11,498
Amortization of discounts and deferred financing costs on senior notes	3,849	6,835
Accretion of net discount on investment securities	(7,857)	(9,583)
Accretion of net deferred loan fees and discounts	(16,112)	(20,961)
Share-based compensation	13,388	10,605
Share-based component of incentive fees	10,977	15,798
Change in fair value of investment securities	(729)	(7,553)
Change in fair value of consolidated VIEs	(11,957)	(18,884)
Change in fair value of servicing rights	1,683	8,017
Change in fair value of loans held-for-sale	(33,157)	(22,633)
Change in fair value of derivatives	4,496	(13,432)
Foreign currency gain, net	1,470	(369)
Gain on sale of investments and other assets	(7,000)	(24,097)
Impairment charges on properties and related intangibles	1,392	412
Loan loss provision, net	3,281	26,797
Depreciation and amortization	57,416	67,857
Loss from unconsolidated entities	34,383	(4,008)
Distributions of earnings from unconsolidated entities	8,056	4,569
Loss on extinguishment of debt	6,114	186
Origination and purchase of loans held-for-sale, net of principal collections	(1,600,100)	(814,154)
Proceeds from sale of loans held-for-sale	928,747	481,765
Changes in operating assets and liabilities:
Related-party payable, net	(22,899)	(17,045)
Accrued and capitalized interest receivable, less purchased interest	(54,261)	(36,218)
Other assets	(18,270)	(15,038)
Accounts payable, accrued expenses and other liabilities	(12,153)	85
Net cash (used in) provided by operating activities	(482,850)	(147,667)
Cash Flows from Investing Activities:
Origination and purchase of loans held-for-investment	(2,051,646)	(2,404,133)
Proceeds from principal collections on loans	1,342,698	1,840,897
Proceeds from loans sold	843,344	194,720
Purchase of investment securities		(20,465)
Proceeds from sales of investment securities	3,978	807
Proceeds from principal collections on investment securities	73,035	321,687
Proceeds from sales and insurance recoveries on properties	1,841	96,147
Purchases and additions to properties and other assets	(10,425)	(36,769)
Investment in unconsolidated entities	(785)	(3,060)
Distribution of capital from unconsolidated entities	10,041	21,287
Payments for purchase or termination of derivatives	(20,212)	(17,373)
Proceeds from termination of derivatives	8,899	13,807
Net cash (used in) provided by investing activities	200,768	7,552
Cash Flows from Financing Activities:
Proceeds from borrowings	3,271,785	3,001,735
Principal repayments on and repurchases of borrowings	(2,679,056)	(2,410,574)
Payment of deferred financing costs	(18,388)	(20,005)
Proceeds from common stock issuances	379	314
Payment of equity offering costs	(8)	(17)
Payment of dividends	(267,301)	(251,671)
Contributions from non-controlling interests	4,636	8,911
Distributions to non-controlling interests	(30,854)	(237,551)
Purchase of treasury stock	0	(12,090)
Issuance of debt of consolidated VIEs	100,224	7,948
Repayment of debt of consolidated VIEs	(91,808)	(98,324)
Distributions of cash from consolidated VIEs	21,411	58,908
Net cash provided by (used in) financing activities	311,020	47,584
Net increase (decrease) in cash, cash equivalents and restricted cash	28,938	(92,531)
Cash, cash equivalents and restricted cash, beginning of period	487,865	418,273
Effect of exchange rate changes on cash	(605)	(529)
Cash, cash equivalents and restricted cash, end of period	516,198	325,213
Supplemental disclosure of cash flow information:
Cash paid for interest	252,392	147,228
Income taxes paid	7,270	6,132
Supplemental disclosure of non-cash investing and financing activities:
Dividends declared, but not yet paid	135,615	126,555
Consolidation of VIEs (VIE asset/liability additions)	4,104,135	1,815,070
Deconsolidation of VIEs (VIE asset/liability reductions)	303,827	1,022,356
Settlement of 2019 Convertible Notes in shares	75,525
Settlement of loans transferred as secured borrowings	74,692
Net assets acquired through foreclosure	27,416
Redemption of Class A Units for common stock	16,373
Lease liabilities arising from obtaining right-of-use assets	$ 7,092
Net assets acquired from consolidated VIEs		27,737
Contribution of Woodstar II Portfolio net assets from non-controlling interests		$ 366,381