Consolidated Statements of Comprehensive Income (Loss) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Net Income	$ 11,534,559	$ 2,144,205	$ 4,237,803
Other Comprehensive Income (Loss):
Unrealized Holding Gains (Losses) Arising During the Year	21,057,498	(6,930,717)	5,505,772
Reclassification Adjustment for Net Gains Realized in Income	(2,285,301)	(204,230)	(1,542,589)
Change in Fair Value of Interest Rate Swap Agreements	(2,283)	37,985	155
Comprehensive Income (Loss)	30,304,473	(4,952,757)	8,201,141
Less: Preferred Dividends	(14,103,432)	(8,267,198)	(7,556,588)
Comprehensive Income (Loss) Attributable to Common Shareholders	$ 16,201,041	$ (13,219,955)	$ 644,553