CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Interest income	$ 34,169,000	$ 27,223,000	$ 90,279,000	$ 90,152,000
Interest expense	1,570,000	2,043,000	5,067,000	23,045,000
Net interest income	32,599,000	25,180,000	85,212,000	67,107,000
Realized gains (losses) on mortgage-backed securities	2,977,000	498,000	(3,068,000)	(24,522,000)
Unrealized gains (losses) on mortgage-backed securities	(11,239,000)	1,168,000	(107,386,000)	38,440,000
(Losses) gains on derivative instruments	5,375,000	4,079,000	15,932,000	(87,630,000)
Net portfolio income	29,712,000	30,925,000	(9,310,000)	(6,605,000)
Expenses
Management Fee Expense	2,156,000	1,252,000	5,569,000	3,897,000
Allocated Overhead	390,000	377,000	1,189,000	1,072,000
Compensation and related benefits	259,000	158,000	884,000	(117,000)
Directors fees and liability insurance	279,000	242,000	874,000	750,000
Audit, legal and other professional fees	212,000	240,000	832,000	841,000
Direct REIT operating expenses	309,000	406,000	1,024,000	852,000
Other administrative	69,000	174,000	514,000	451,000
Total expenses	3,674,000	2,849,000	10,886,000	7,746,000
Net income (loss)	$ 26,038,000	$ 28,076,000	$ (20,196,000)	$ (14,351,000)
Basic and diluted net income (loss) per share
Basic	$ 0.20	$ 0.42	$ (0.19)	$ (0.22)
Diluted	$ 0.20	$ 0.42	$ (0.19)	$ (0.22)
Weighted Average Shares Outstanding
Weighted Average Shares - Basic and Diluted	128,587,347	67,301,901	105,305,772	66,014,379
Dividends Per Share [Abstract]
Dividends Declared Per Common Share	$ 0.195	$ 0.190	$ 0.585	$ 0.595