Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Interest Income
Interest income	$ 217,264	$ 209,362	$ 124,291
Interest expense (includes $5,674, $13,739 and $981 on securitized debt held by affiliates, respectively)	150,274	138,240	48,373
Net Interest Income	66,990	71,122	75,918
Other Income (Loss)
Realized gain (loss) on sale of investments, net	28,278	(63,257)	20,598
Other than temporary impairment	8,574	11,180	22,873
Unrealized gain (loss), net	107,529	(24,671)	28,396
Gain (loss) on derivative instruments, net	(103,727)	77,969	3,292
Other, net	2,204	(189)	1,031
Other Income (Loss)	25,710	(21,328)	30,444
Expenses
Management fee to affiliate	7,354	8,673	8,100
Other operating expenses	5,519	6,076	2,419
General and administrative expenses:
Compensation expense	2,591	2,186	2,692
Professional fees	3,980	4,299	3,242
Other general and administrative expenses	1,500	1,442	1,325
Total general and administrative expenses	8,071	7,927	7,259
Total Expenses	20,944	22,676	17,778
Income before income taxes	71,756	27,118	88,584
Income tax provision (benefit)	1,057	709	3,487
Net income	$ 70,699	$ 26,409	$ 85,097
Net income per Common Share — Basic (in dollars per share)	$ 1.37	$ 0.61	$ 2.03
Net income per Common Share — Diluted (in dollars per share)	$ 1.37	$ 0.61	$ 2.03