RESIDENTIAL MORTGAGE LOAN SECURITIZATION TRUSTS - Condensed Consolidated Statements of Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statements of Operations
Net interest income	$ 4,745,766	$ 6,152,849	$ 15,357,448	$ 17,685,350
General and administrative fees	(1,288,978)	(1,171,421)	(4,120,807)	(4,483,064)
Unrealized gain (loss) on residential loans held in securitization trusts	(155,252)	(764,599)	(773,674)	80,511
Net income (loss)	(4,256,337)	1,496,356	(4,183,767)	(19,527,535)
Residential mortgage loans
Statements of Operations
Interest income	1,249,966	1,582,090	3,903,924	9,143,343
Interest expense	995,293	1,210,186	3,100,616	6,978,474
Net interest income	254,673	371,904	803,308	2,164,869
General and administrative fees	(11,003)	(13,653)	(34,227)	(254,424)
Unrealized gain (loss) on residential loans held in securitization trusts	(155,252)	(764,599)	(773,674)	80,511
Net income (loss)	$ 88,418	$ (406,348)	$ (4,593)	$ 1,990,956