Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Net Income (Loss)	$ 20,071,984	$ 3,589,871	$ (2,136,353)	$ 5,875,417
Other Comprehensive Loss:
Unrealized Holding Loss Arising During the Period		(2,838,005)		(4,853,529)
Reclassification Adjustment for Net Gains Realized in Income		(1,019,877)		(1,051,768)
Change in Fair Value of Interest Rate Swap Agreements		(2,794)		7,147
Comprehensive Income (Loss)	20,071,984	(270,805)	(2,136,353)	(22,733)
Less: Preferred Dividends	(5,123,257)	(3,789,747)	(10,069,430)	(7,579,494)
Comprehensive Income (Loss) Attributable to Common Shareholders	$ 14,948,727	$ (4,060,552)	$ (12,205,783)	$ (7,602,227)