CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows From Operating Activities:
Net (loss) income	$ (63,590)	$ 52,538
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Accretion of discounts and net deferred fees on loans held-for-investment	(12,557)	(11,038)
Amortization of deferred debt issuance costs on convertible senior notes and securitized debt obligations	4,646	5,792
Provision for credit losses	62,241	0
Realized losses on sales	16,913	0
Equity based compensation	3,994	3,607
Net change in assets and liabilities:
Increase in accrued interest receivable	(610)	(530)
Increase in other assets	(19,899)	(10,157)
Increase in other liabilities	44,911	10,197
Net cash provided by operating activities	36,049	50,409
Cash Flows From Investing Activities:
Originations, acquisitions and additional fundings of loans held-for-investment, net of deferred fees	(314,722)	(1,216,679)
Proceeds from repayment of loans held-for-investment	290,838	468,534
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale	12,798	0
Principal payments on held-to-maturity securities	18,076	7,102
Proceeds from sales of loans held-for-sale	193,538	0
Net cash provided by (used in) investing activities	200,528	(741,043)
Cash Flows From Financing Activities:
Proceeds from repurchase agreements	397,004	1,014,802
Principal payments on repurchase agreements	(470,180)	(790,433)
Proceeds from issuance of securitized debt obligations	0	646,868
Principal payments on securitized debt obligations	(115,853)	(181,000)
Proceeds from asset-specific financings	6,626	114,080
Proceeds from revolving credit facilities	38,361	164,598
Repayment of revolving credit facilities	(80,369)	(239,598)
Proceeds from senior secured term loan facilities	205,647	0
Proceeds from issuance of warrants to purchase common stock	4,541	0
Proceeds from issuance of common stock, net of offering costs	0	207,405
Dividends paid on preferred stock	(75)	(75)
Dividends paid on common stock	(23,038)	(63,273)
Net cash (used in) provided by financing activities	(37,336)	873,374
Net increase in cash, cash equivalents and restricted cash	199,241	182,740
Cash, cash equivalents and restricted cash at beginning of period	159,764	123,423
Cash, cash equivalents and restricted cash at end of period	359,005	306,163
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	83,366	95,847
Noncash Activities:
Transfers of loans held-for-investment to loans held-for-sale	210,452	0
Dividends declared but not paid at end of period	$ 11,065	$ 23,063