CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest income	$ 27,258,000	$ 36,455,000	$ 62,929,000	$ 68,888,000
Interest expense	4,479,000	22,431,000	21,002,000	41,323,000
Net interest income	22,779,000	14,024,000	41,927,000	27,565,000
Realized gains (losses) on mortgage-backed securities	3,360,000	112,000	(25,020,000)	355,000
Unrealized gains (losses) on mortgage-backed securities	34,240,000	26,506,000	37,272,000	44,547,000
(Losses) gains on derivative instruments	(8,851,000)	(34,288,000)	(91,709,000)	(53,320,000)
Net portfolio income	51,528,000	6,354,000	(37,530,000)	19,147,000
Expenses
Management Fee Expense	1,268,000	1,326,000	2,645,000	2,611,000
Allocated Overhead	348,000	327,000	695,000	650,000
Compensation and related benefits	161,000	182,000	(275,000)	(226,000)
Directors fees and liability insurance	248,000	237,000	508,000	490,000
Audit, legal and other professional fees	346,000	364,000	601,000	665,000
Direct REIT operating expenses	240,000	285,000	446,000	660,000
Other administrative	145,000	100,000	277,000	167,000
Total expenses	2,756,000	2,821,000	4,897,000	5,017,000
Net income (loss)	$ 48,772,000	$ 3,533,000	$ (42,427,000)	$ 14,130,000
Basic and diluted net income (loss) per share
Basic	$ 0.74	$ 0.07	$ (0.65)	$ 0.28
Diluted	$ 0.73	$ 0.07	$ (0.65)	$ 0.28
Weighted Average Shares Outstanding
Weighted Average Shares - Basic and Diluted	66,310,219	52,600,758	65,408,722	50,762,883
Dividends Per Share [Abstract]
Dividends Declared Per Common Share	$ 0.165	$ 0.240	$ 0.405	$ 0.480