CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
INTEREST INCOME:
Investment securities and other interest earning assets	$ 13,348	$ 15,355	$ 32,447	$ 30,671
Total interest income	47,970	167,258	258,583	315,240
INTEREST EXPENSE:
Repurchase agreements and other interest bearing liabilities	7,366	22,823	28,980	43,209
Total interest expense	19,444	141,567	182,976	263,344
NET INTEREST INCOME	28,526	25,691	75,607	51,896
NON-INTEREST INCOME (LOSS):
Recovery of loan losses	0	1,296	0	2,362
Realized (losses) gains, net	(934)	4,447	(148,852)	26,453
Realized loss on de-consolidation of multi-family loans held in securitization trusts and multi-family collateralized debt obligations, net	0	0	(54,118)	0
Unrealized gains (losses), net	102,872	78	(293,908)	2,786
Impairment of goodwill	0	0	(25,222)	0
Loss on extinguishment of debt	0	0	0	(2,857)
Other income	2,474	2,740	4,509	10,680
Total non-interest income (loss)	104,412	8,561	(517,591)	39,424
GENERAL, ADMINISTRATIVE AND OPERATING EXPENSES:
General and administrative expenses	11,823	9,815	22,628	18,725
Operating expenses	2,251	2,579	5,330	6,313
Total general, administrative and operating expenses	14,074	12,394	27,958	25,038
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES	118,864	21,858	(469,942)	66,282
Income tax expense (benefit)	1,927	(134)	1,688	(60)
NET INCOME (LOSS)	116,937	21,992	(471,630)	66,342
Net loss attributable to non-controlling interest in consolidated variable interest entities	876	743	1,060	532
NET INCOME (LOSS) ATTRIBUTABLE TO COMPANY	117,813	22,735	(470,570)	66,874
Preferred stock dividends	(10,296)	(6,257)	(20,593)	(12,182)
NET INCOME (LOSS) ATTRIBUTABLE TO COMPANY'S COMMON STOCKHOLDERS	$ 107,517	$ 16,478	$ (491,163)	$ 54,692
Basic earnings (loss) per common share (in dollars per share)	$ 0.28	$ 0.08	$ (1.35)	$ 0.29
Diluted earnings (loss) per common share (in dollars per share)	$ 0.28	$ 0.08	$ (1.35)	$ 0.29
Weighted average shares outstanding-basic (in shares)	377,465	200,691	364,189	187,628
Weighted average shares outstanding-diluted (in shares)	399,982	202,398	364,189	209,011
Convertible notes
INTEREST EXPENSE:
Interest expense	$ 2,739	$ 2,694	$ 5,474	$ 5,384
Subordinated debentures
INTEREST EXPENSE:
Subordinated debentures	582	734	1,231	1,474
Securitized debt
INTEREST EXPENSE:
Interest expense	469	0	469	742
Residential loans
INTEREST INCOME:
Interest income	29,420	13,598	63,720	29,489
Preferred equity and mezzanine loan investments
INTEREST INCOME:
Interest income	5,202	5,148	10,575	10,155
Multi-family loans held in securitization trusts
INTEREST INCOME:
Interest income	0	133,157	151,841	244,925
Residential collateralized debt obligations
INTEREST EXPENSE:
Interest expense	8,288	402	17,060	824
Multi-family collateralized debt obligations, at fair value
INTEREST EXPENSE:
Interest expense	$ 0	$ 114,914	$ 129,762	$ 211,711