RESIDENTIAL MORTGAGE LOAN SECURITIZATION TRUSTS - Condensed Consolidated Statements of Operations (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Variable Interest Entity [Line Items]
Net interest income	$ 3,117,572	$ 5,783,761
General and administrative fees	(1,390,061)	(1,588,572)
Unrealized gain (loss) on residential loans held in securitization trusts	(255,403)	(368,343)
Net income	11,315,000	2,369,141
Residential mortgage loans
Variable Interest Entity [Line Items]
Interest income	1,147,641	1,355,438
Interest expense	920,057	1,074,352
Net interest income	227,584	281,086
General and administrative fees	(6,928)	(11,844)
Unrealized gain (loss) on residential loans held in securitization trusts	(255,403)	(368,343)
Net income	$ (34,747)	$ (99,101)