Consolidated Statements of Changes in Equity - USD ($)	Total	Cumulative Preferred Stock	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income
Balance at beginning (Share) at Dec. 31, 2018		125		14,912,990
Balance beginning at Dec. 31, 2018	$ 265,292,359	$ 125,000	$ 0	$ 149,130	$ 298,109,424	$ (33,091,195)	$ 0
Distribution declared on common share	(7,556,413)					(7,556,413)
Distributions declared on preferred shares	(3,906)					(3,906)
Net income	3,922,875					3,922,875
Net unrealized gains on marketable securities	0
Balance at ending (Share) at Mar. 31, 2019		125		14,912,990
Balance ending at Mar. 31, 2019	261,654,915	$ 125,000	0	$ 149,130	298,109,424	(36,728,639)	0
Balance at beginning (Share) at Dec. 31, 2019		125		15,125,681
Balance beginning at Dec. 31, 2019	247,543,733	$ 125,000	0	$ 151,257	301,727,297	(54,459,821)	0
Issuance of common stock (Shares)				4,574,470
Issuance of common stock	75,379,993			$ 45,745	75,334,248
Distribution declared on common share	(8,832,071)					(8,832,071)
Distributions declared on preferred shares	(3,906)					(3,906)
Net income	578,963					578,963
Net unrealized gains on marketable securities	192,919						192,919
Reclassification of net realized gains on marketable securities into earnings	(8,894)						(8,894)
Balance at ending (Share) at Mar. 31, 2020		125		19,700,151
Balance ending at Mar. 31, 2020	$ 314,850,737	$ 125,000	$ 0	$ 197,002	$ 377,061,545	$ (62,716,835)	$ 184,025