Real Estate Securities (Schedule of Information Regarding Real Estate Securities) (Details) (USD $)	3 Months Ended				12 Months Ended		3 Months Ended		12 Months Ended		3 Months Ended		12 Months Ended		3 Months Ended		12 Months Ended		3 Months Ended		12 Months Ended		3 Months Ended		12 Months Ended		3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 30-Year Adjustable Rate Mortgage [Member]		Dec. 31, 2012 30-Year Adjustable Rate Mortgage [Member]		Mar. 31, 2013 30-Year Fixed Rate Mortgage [Member]		Dec. 31, 2012 30-Year Fixed Rate Mortgage [Member]		Mar. 31, 2013 Alternative - A [Member]		Dec. 31, 2012 Alternative - A [Member]		Mar. 31, 2013 Pay Option Adjustable Rate [Member]		Dec. 31, 2012 Pay Option Adjustable Rate [Member]		Mar. 31, 2013 Prime [Member]		Dec. 31, 2012 Prime [Member]		Mar. 31, 2013 Subprime [Member]		Dec. 31, 2012 Subprime [Member]		Mar. 31, 2013 Total RMBS [Member]		Dec. 31, 2012 Total RMBS [Member]
Investment Holdings [Line Items]
Principal Balance			$ 2,939,138		$ 3,083,892		$ 170,322,090		$ 61,034,333		$ 114,455,922		$ 38,549,827		$ 40,163,597		$ 1,249,426		$ 117,188,899		$ 64,978,647		$ 47,558,339		$ 4,419,732		$ 492,627,985		$ 173,315,857
Premium (Discount)			443,080		351,047		7,593,622		3,056,889		(21,415,546)		(8,606,689)		(8,849,272)		(378,803)		(13,506,628)		(8,074,525)		(13,700,810)		(825,131)		(49,435,554)		(14,477,212)
Amortized Cost			3,382,218		3,434,939		177,915,712		64,091,222		93,040,376		29,943,138		31,314,325		870,623		103,682,271		56,904,122		33,857,529		3,594,601		443,192,431		158,838,645
Gross Unrealized
Gains				[1]		[2]	1,865,453	[1]	2,442,401	[2]	4,359,861	[1]	3,436,729	[2]	328,480	[1]	95,221	[2]	6,582,403	[1]	5,668,301	[2]	721,412	[1]	401,214	[2]	13,857,609	[1]	12,043,866	[2]
Losses			(303,810)	[1]	(194,609)	[2]	(570,884)	[1]	(13,921)	[2]	(36,009)	[1]		[2]	(33,897)	[1]		[2]	(27,319)	[1]	(2,298)	[2]	(149,648)	[1]		[2]	(1,121,567)	[1]	(210,828)	[2]
Fair Value			3,078,408		3,240,330		179,210,281		66,519,702		97,364,228		33,379,867		31,608,908		965,844		110,237,355		62,570,125		34,429,293		3,995,815		455,928,473		170,671,683
Weighted Average Coupon			2.83%		2.84%		3.36%		3.82%		5.31%		5.69%		1.25%		1.19%		5.50%		5.79%		0.66%		0.98%		3.94%		4.81%
Weighted Average Yield			2.28%	[3]	2.28%	[3]	3.07%	[3]	3.44%	[3]	5.90%	[3]	7.95%	[3]	5.25%	[3]	8.67%	[3]	6.03%	[3]	7.34%	[3]	6.62%	[3]	9.10%	[3]	4.80%	[3]	5.89%	[3]
Change in unrealized gain / loss on real estate securities and mortgage loans	$ 874,371	$ 6,489,794

[1] The Company has elected the fair value option pursuant to ASC 825 for its real estate securities. The Company recorded net change in unrealized gain / loss on its real estate securities of $903,277 and $6,489,794 for the three months ended March 31, 2013 and 2012, respectively, as change in unrealized gain / loss on real estate securities and mortgage loans in the consolidated statements of operations.

[2] The Company has elected the fair value option pursuant to ASC 825 for its real estate securities.

[3] Unleveraged yield.