Condensed Consolidated Statement of Stockholders' Equity - 6 months ended Jun. 30, 2018 - USD ($)	Total	Preferred Stock	Common Stock	Additional Paid in Capital	Accumulated Other Comprehensive Income (Loss)	Cumulative Distributions to Stockholders	Accumulated Earnings (Deficit)
Balance (in shares) at Dec. 31, 2017		1,610,000	22,143,758
Balance at Dec. 31, 2017	$ 145,791,277	$ 37,156,972	$ 221,393	$ 224,048,169	$ (15,054,484)	$ (104,650,235)	$ 4,069,462
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net (in shares)			1,539,406
Issuance of common stock, net	7,342,967		$ 15,394	7,327,573
Cost of issuing common stock	(64,766)			(64,766)
Restricted stock compensation expense	9,662			9,662
Net income (loss)	(10,175,063)						(10,175,063)
Increase (decrease) in net unrealized gain (loss) on available-for-sale securities, net	0				0
Reclassification adjustment for net gain (loss) included in net income (loss)	12,617,794				12,617,794
Common dividends declared	(3,735,676)					(3,735,676)
Preferred dividends declared	(1,751,235)					(1,751,235)
Balance (in shares) at Jun. 30, 2018		1,610,000	23,683,164
Balance at Jun. 30, 2018	$ 150,034,960	$ 37,156,972	$ 236,787	$ 231,320,638	$ (2,436,690)	$ (110,137,146)	$ (6,105,601)