STOCKHOLDERS' EQUITY - Dividends Declared (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017		Dec. 31, 2016	[1]	Sep. 30, 2016
Dividends [Line Items]
Dividend Amount	$ 29,349	[1]	$ 39,132		$ 29,349
Common Stock
Dividends [Line Items]
Dividend Amount	$ 8,582,666
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.45
Distribution One | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Dec. 27, 2016
Record Date	Jan. 17, 2017
Payment Date	Jan. 27, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution One | Common Stock
Dividends [Line Items]
Declaration Date	Dec. 27, 2016
Record Date	Jan. 17, 2017
Payment Date	Jan. 30, 2017
Dividend Amount	$ 876,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.04534
Distribution Two | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Dec. 27, 2016
Record Date	Feb. 15, 2017
Payment Date	Feb. 27, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution Two | Common Stock
Dividends [Line Items]
Declaration Date	Dec. 27, 2016
Record Date	Feb. 15, 2017
Payment Date	Feb. 27, 2017
Dividend Amount	$ 876,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.04534
Distribution Three | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Dec. 27, 2016
Record Date	Mar. 15, 2017
Payment Date	Mar. 27, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution Three | Common Stock
Dividends [Line Items]
Declaration Date	Dec. 27, 2016
Record Date	Mar. 15, 2017
Payment Date	Mar. 30, 2017
Dividend Amount	$ 876,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.04534
Distribution Four | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Mar. 16, 2017
Record Date	Apr. 17, 2017
Payment Date	Apr. 27, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution Four | Common Stock
Dividends [Line Items]
Declaration Date	Mar. 16, 2017
Record Date	Apr. 17, 2017
Payment Date	Apr. 27, 2017
Dividend Amount	$ 876,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.04534
Distribution Five | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Mar. 16, 2017
Record Date	May 15, 2017
Payment Date	May 30, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution Five | Common Stock
Dividends [Line Items]
Declaration Date	Mar. 16, 2017
Record Date	May 15, 2017
Payment Date	May 30, 2017
Dividend Amount	$ 876,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.04534
Distribution Six | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Mar. 16, 2017
Record Date	Jun. 15, 2017
Payment Date	Jun. 27, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution Six | Common Stock
Dividends [Line Items]
Declaration Date	Mar. 16, 2017
Record Date	Jun. 15, 2017
Payment Date	Jun. 29, 2017
Dividend Amount	$ 876,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.04534
Distribution Seven | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Jun. 14, 2017
Record Date	Jul. 17, 2017
Payment Date	Jul. 27, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution Seven | Common Stock
Dividends [Line Items]
Declaration Date	Jun. 14, 2017
Record Date	Jul. 17, 2017
Payment Date	Jul. 28, 2017
Dividend Amount	$ 1,106,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.05723
Distribution Eight | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Jun. 14, 2017
Record Date	Aug. 15, 2017
Payment Date	Aug. 28, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution Eight | Common Stock
Dividends [Line Items]
Declaration Date	Jun. 14, 2017
Record Date	Aug. 15, 2017
Payment Date	Aug. 30, 2017
Dividend Amount	$ 1,106,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.05723
Distribution Nine | Series A Preferred Stock
Dividends [Line Items]
Declaration Date	Jun. 14, 2017
Record Date	Sep. 15, 2017
Payment Date	Sep. 27, 2017
Dividend Amount	$ 293,503
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.1823
Distribution Nine | Common Stock
Dividends [Line Items]
Declaration Date	Jun. 14, 2017
Record Date	Sep. 15, 2017
Payment Date	Sep. 28, 2017
Dividend Amount	$ 1,106,963
Cash Dividend Per Weighted Average Share (in dollars per share)	$ 0.05723

[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 September 30, 2017 and December 31, 2016, assets of consolidated VIEs totaled $1,280,093,874 and $1,369,120,941 respectively, and the liabilities of consolidated VIEs totaled $1,253,353,428 and $1,344,404,080 respectively