FINANCIAL INSTRUMENTS (Details) - USD ($)		Dec. 31, 2014	Dec. 31, 2013
Assets:
Assets, Fair Value Disclosure		$ 2,865,575,195	$ 480,568,925
Liabilities:
Liabilities, Fair Value Disclosure		(2,104,899,012)	(1,231,667)
Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure		0	154,265
Liabilities:
Liabilities, Fair Value Disclosure		(533,951)	0
Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure		2,865,575,195	480,414,660
Liabilities:
Liabilities, Fair Value Disclosure		(2,104,365,061)	(1,231,667)
Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure		0	0
Liabilities:
Liabilities, Fair Value Disclosure		0	0
Residential mortgage-backed securities [Member]
Assets:
Assets, Fair Value Disclosure	[1]	368,315,738	444,984,955
Residential mortgage-backed securities [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure	[1]	0	0
Residential mortgage-backed securities [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure	[1]	368,315,738	444,984,955
Residential mortgage-backed securities [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure	[1]	0	0
Residential mortgage loans [Member]
Assets:
Assets, Fair Value Disclosure		54,678,382
Residential mortgage loans [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure		0
Residential mortgage loans [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure		54,678,382
Residential mortgage loans [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure		0
Multi-Family mortgage loans held in securitization trusts [Member]
Assets:
Assets, Fair Value Disclosure		1,750,294,430
Multi-Family mortgage loans held in securitization trusts [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure		0
Multi-Family mortgage loans held in securitization trusts [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure		1,750,294,430
Multi-Family mortgage loans held in securitization trusts [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure		0
Residential mortgage loans held in securitization trusts [Member]
Assets:
Assets, Fair Value Disclosure		631,446,984
Residential mortgage loans held in securitization trusts [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure		0
Residential mortgage loans held in securitization trusts [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure		631,446,984
Residential mortgage loans held in securitization trusts [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure		0
Linked transactions [Member]
Assets:
Assets, Fair Value Disclosure	[2]	60,818,111	33,352,562
Linked transactions [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure	[2]	0	0
Linked transactions [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure	[2]	60,818,111	33,352,562
Linked transactions [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure	[2]	0	0
Swaptions [Member]
Assets:
Assets, Fair Value Disclosure		21,550	1,770,795
Swaptions [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure		0	0
Swaptions [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure		21,550	1,770,795
Swaptions [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure		0	0
TBAs [Member]
Assets:
Assets, Fair Value Disclosure			68,359
TBAs [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure			0
TBAs [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure			68,359
TBAs [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure			0
Interest rate swaps [Member]
Assets:
Assets, Fair Value Disclosure			237,989
Liabilities:
Liabilities, Fair Value Disclosure		(1,755,107)	(1,231,667)
Interest rate swaps [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure			0
Liabilities:
Liabilities, Fair Value Disclosure		0	0
Interest rate swaps [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure			237,989
Liabilities:
Liabilities, Fair Value Disclosure		(1,755,107)	(1,231,667)
Interest rate swaps [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure			0
Liabilities:
Liabilities, Fair Value Disclosure		0	0
Multi-family securitized debt obligations [Member]
Liabilities:
Liabilities, Fair Value Disclosure		(1,670,573,456)
Multi-family securitized debt obligations [Member] | Fair Value, Inputs, Level 1 [Member]
Liabilities:
Liabilities, Fair Value Disclosure		0
Multi-family securitized debt obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Liabilities:
Liabilities, Fair Value Disclosure		(1,670,573,456)
Multi-family securitized debt obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Liabilities:
Liabilities, Fair Value Disclosure		0
Residential securitized debt obligations [Member]
Liabilities:
Liabilities, Fair Value Disclosure		(432,035,976)
Residential securitized debt obligations [Member] | Fair Value, Inputs, Level 1 [Member]
Liabilities:
Liabilities, Fair Value Disclosure		0
Residential securitized debt obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Liabilities:
Liabilities, Fair Value Disclosure		(432,035,976)
Residential securitized debt obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Liabilities:
Liabilities, Fair Value Disclosure		0
Futures [Member]
Assets:
Assets, Fair Value Disclosure			154,265
Liabilities:
Liabilities, Fair Value Disclosure		(533,951)
Futures [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Assets, Fair Value Disclosure			154,265
Liabilities:
Liabilities, Fair Value Disclosure		(533,951)
Futures [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Assets, Fair Value Disclosure			0
Liabilities:
Liabilities, Fair Value Disclosure		0
Futures [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets, Fair Value Disclosure			$ 0
Liabilities:
Liabilities, Fair Value Disclosure		$ 0

[1] For more detail about the fair value of the Company’s MBS and type of securities, see Note 3 and Note 4.

[2] For more detail about the fair value of the Company’s Linked Transactions, see Note 3 and Note 8.