CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
NET INTEREST INCOME:
Interest income	$ 206,866	$ 350,161	$ 694,614
Interest expense	83,248	223,068	566,750
Total net interest income	123,618	127,093	127,864
NON-INTEREST INCOME (LOSS):
Realized gains (losses), net	21,451	(148,058)	32,642
Realized loss on de-consolidation of Consolidated K-Series	0	(54,118)	0
Unrealized gains (losses), net	95,649	(160,161)	35,837
Income from equity investments	33,896	26,670	23,626
Impairment of goodwill	0	(25,222)	0
Income from real estate	15,230	419	215
Other income	5,515	678	2,128
Total non-interest income (loss)	171,741	(359,792)	94,448
GENERAL, ADMINISTRATIVE AND OPERATING EXPENSES:
General and administrative expenses	48,908	42,228	35,794
Expenses related to real estate	28,849	763	482
Portfolio operating expenses	26,668	11,572	13,559
Total general, administrative and operating expenses	104,425	54,563	49,835
INCOME (LOSS) FROM OPERATIONS BEFORE INCOME TAXES	190,934	(287,262)	172,477
Income tax expense	2,458	981	(419)
NET INCOME (LOSS)	188,476	(288,243)	172,896
Net loss (income) attributable to non-controlling interest in consolidated variable interest entities	4,724	(267)	840
NET INCOME (LOSS) ATTRIBUTABLE TO COMPANY	193,200	(288,510)	173,736
Preferred stock dividends	(42,859)	(41,186)	(28,901)
Preferred stock redemption charge	(6,165)	0	0
NET INCOME (LOSS) ATTRIBUTABLE TO COMPANY'S COMMON STOCKHOLDERS	$ 144,176	$ (329,696)	$ 144,835
Basic earnings per common share (in USD per share)	$ 0.38	$ (0.89)	$ 0.65
Diluted earnings per common share (in USD per share)	$ 0.38	$ (0.89)	$ 0.64
Weighted average shares outstanding-basic (in shares)	379,232	371,004	221,380
Weighted average shares outstanding-diluted (in shares)	380,968	371,004	242,596