STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($)			3 Months Ended		9 Months Ended		12 Months Ended	34 Months Ended
	Jan. 18, 2018	Jun. 16, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Sep. 30, 2018	Dec. 27, 2016	Dec. 15, 2015
Stockholders' Equity Note [Line Items]
Net income (loss)			$ 4,353,026	$ (4,256,337)	$ (5,822,037)	$ (4,183,767)
Common stock, shares authorized (in shares)			450,000,000		450,000,000		450,000,000	450,000,000
Common stock, par value (in dollars per share)			$ 0.01		$ 0.01		$ 0.01	$ 0.01
Common stock, shares issued (in shares)			23,687,664		23,687,664		22,143,758	23,687,664
Common stock, shares outstanding (in shares)			23,687,664		23,687,664		22,143,758	23,687,664
Proceeds from issuance of common stock		$ 19,800,000			$ 7,245,817	$ 19,827,811
Stock repurchase program, authorized amount										$ 10,000,000
Preferred stock, shares authorized (in shares)			50,000,000		50,000,000		50,000,000	50,000,000
Preferred stock, par value (in dollars per share)			$ 0.01		$ 0.01		$ 0.01	$ 0.01
Preferred stock, shares issued (in shares)			1,610,000		1,610,000		1,610,000	1,610,000
Preferred stock, dividend rate, percentage					8.75%	8.75%
Preferred stock, liquidation preference (in dollars per share)			$ 25.00		$ 25.00		$ 25	$ 25.00
Preferred stock, shares outstanding (in shares)			1,610,000		1,610,000		1,610,000	1,610,000
Dividends payable			$ 1,450,609	29,349	$ 1,450,609	$ 29,349	$ 39,132	$ 1,450,609
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			3,472,517	$ (2,949,798)	$ 4,164,013	$ (3,189,980)
Stock Repurchase Program
Stockholders' Equity Note [Line Items]
Common stock shares repurchased (in shares)					0		126,856	126,856
Weighted average share price of common stock repurchased (in dollars per share)					$ 5.09		$ 5.09
Stock repurchase program, remaining authorized amount			$ 9,400,000		$ 9,400,000			$ 9,400,000
Series A Preferred Stock
Stockholders' Equity Note [Line Items]
Preferred stock, par value (in dollars per share)			$ 0.01		$ 0.01		$ 0.01	$ 0.01
Preferred stock, dividend rate, percentage					8.75%
Preferred stock, liquidation preference (in dollars per share)			$ 25		$ 25			$ 25
Common Stock
Stockholders' Equity Note [Line Items]
Common stock, shares issued (in dollars per share)		$ 4.60
Issuance of common stock, net (in shares)	1,539,406	4,600,000			1,543,906
Dividends payable			$ 5,156,936		$ 5,156,936			$ 5,156,936
Dividends payable, amount per share (in dollars per share)			$ 0.22		$ 0.22			$ 0.22
XL Investments
Stockholders' Equity Note [Line Items]
Common stock shares into which warrants may be converted (in shares)	3,753,492								3,753,492
Common stock, shares issued (in dollars per share)	$ 13.11
Hunt | Private Placement
Stockholders' Equity Note [Line Items]
Common stock, shares issued (in dollars per share)	$ 4.77
Aggregate capital raise	$ 7,342,967