STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($)			3 Months Ended			12 Months Ended		13 Months Ended	28 Months Ended
	Jan. 18, 2018	Jun. 16, 2017	Mar. 31, 2018		Mar. 31, 2017	Dec. 31, 2017		Dec. 31, 2016	Mar. 31, 2018		Dec. 27, 2016	Dec. 15, 2015
Stockholders' Equity Note [Line Items]
Common stock, shares authorized (in shares)			450,000,000			450,000,000			450,000,000
Common stock, par value (in dollars per share)			$ 0.01			$ 0.01			$ 0.01
Common stock, shares issued (in shares)			23,683,164			22,143,758			23,683,164
Common stock, shares outstanding (in shares)			23,683,164			22,143,758			23,683,164
Proceeds from issuance of common stock		$ 19,800,000	$ 7,310,584		$ (9,310)
Stock repurchase program, authorized amount												$ 10,000,000
Preferred stock, shares authorized (in shares)			50,000,000			50,000,000			50,000,000
Preferred stock, par value (in dollars per share)			$ 0.01			$ 0.01			$ 0.01
Preferred stock, shares issued (in shares)			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			$ 25.00
Preferred stock, shares outstanding (in shares)			1,610,000			1,610,000			1,610,000
Dividends payable			$ 39,132	[1]	$ 39,132	$ 39,132	[1]		$ 39,132	[1]
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
Stock repurchase program, remaining authorized amount			$ 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
Preferred stock, dividend rate, percentage			8.75%
Preferred stock, liquidation preference (in dollars per share)			$ 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	1,539,406
Dividends payable			$ 2,314,686						$ 2,314,686
Dividends payable, amount per share (in dollars per share)			$ 0.10						$ 0.10
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

[1] Our consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs") as the Company is the primary beneficiary of these VIEs. As of March 31, 2018 and December 31, 2017, assets of consolidated VIEs totaled $1,223,232,702 and $1,255,404,335 respectively, and the liabilities of consolidated VIEs totaled $1,197,735,060 and $1,228,295,517 respectively