QUARTERLY FINANCIAL DATA (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Total interest income	$ 10,169,000	$ 9,719,000	$ 17,551,000	$ 21,516,000	$ 22,720,000	$ 22,627,000	$ 21,595,000	$ 22,191,000	$ 12,152,397	$ 28,046,192
Total interest expense	(5,571,000)	(4,604,000)	(12,981,000)	(18,398,000)	(17,938,000)	(17,881,000)	(16,767,000)	(16,408,000)
Net interest income	4,598,000	5,115,000	4,570,000	3,118,000	4,782,000	4,746,000	4,828,000	5,784,000	17,400,715	20,139,551
Other-than-temporary impairment	0	0	0	0	0	0	0	0
Other income (loss)	(476,000)	1,361,000	(23,670,000)	11,410,000	7,164,000	(5,949,000)	(3,989,000)	201,000
Total expenses	2,250,000	2,123,000	2,390,000	3,213,000	3,055,000	3,053,000	3,135,000	3,615,000
Net income (loss) before provision for income taxes	1,872,000	0	0	0					(3,949,717)	4,706,961
(Provision for) benefit from income taxes	(1,522,000)	0	0	0					(1,521,745)	0
Net income (loss)	350,000	4,353,000	(21,490,000)	11,315,000	8,891,000	(4,256,000)	(2,297,000)	2,369,000	(5,471,462)	4,706,961
Net income (loss) attributable to common shareholders (basic and diluted)	(546,000)	3,473,000	(22,361,000)	10,434,000	8,000,000	(5,137,000)	(3,167,000)	1,489,000	(9,000,050)	1,184,925
Earnings (loss) per share:
Net income (loss) attributable to common shareholders (basic and diluted)	$ (546,000)	$ 3,473,000	$ (22,361,000)	$ 10,434,000	$ 8,000,000	$ (5,137,000)	$ (3,167,000)	$ 1,489,000	$ (9,000,050)	$ 1,184,925
Weighted average number of shares of common stock outstanding:	23,687,664	23,687,273	23,683,164	23,392,387	22,142,926	22,139,258	18,297,500	17,539,258	23,613,636	20,048,128
Basic and diluted income (loss) per share (in dollars per share)	$ (0.02)	$ 0.15	$ (0.94)	$ 0.45	$ 0.36	$ (0.23)	$ (0.17)	$ 0.08	$ (0.38)	$ 0.06