RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	May 31, 2018	Dec. 31, 2016
Related Party Transaction [Line Items]
Management fee percentage	1.50%			1.50%
Management agreement, renewal terms				1 year
Management fee percentage, waived portion	0.75%
Management fee waived		$ 37,661		$ 41,755
Management fee		573,412	$ 623,525	1,670,804	$ 1,873,486
Management fee payable		187,000	208,000	187,000	208,000
Reimbursable expenses		915,452	1,184,391	3,086,304	3,573,445
Reimbursable expenses payable		$ 400,000	$ 483,187	400,000	$ 483,187
MAXEX LLC
Related Party Transaction [Line Items]
Proceeds from sale of loans				2,100,000
MAXEX LLC | Residential Mortgage Loans
Related Party Transaction [Line Items]
Proceeds from sale of loans							$ 22,500,000
MAXEX LLC | Loan Review Services
Related Party Transaction [Line Items]
Proceeds from fees				241,455
Marketing fees paid				$ 51,904
Manager Equity Plan
Related Party Transaction [Line Items]
Maximum shares issued, percentage of issued and outstanding shares of common stock				3.00%
Scenario, Forecast
Related Party Transaction [Line Items]
Management fee waived						$ 149,415