Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities
Net (loss)/income	$ (1,446,990)	$ 17,619,685
Adjustments to reconcile net (loss)/income to net cash provided by operating activities
Net (accretion)/amortization of (discounts) premiums related to mortgage loans	(2,918,421)
Net (accretion)/amortization of (discounts)/premiums related to real estate securities	(2,048,391)	(721,891)
Change in unrealized gain or loss on mortgage loans	(5,211,327)
Change in unrealized gain or loss on real estate securities	9,953,797	(15,662,891)
Realized (gain) on mortgage loans	(412,726)
Realized loss on real estate securities	9,359,315	1,102,068
Change in unrealized gain or loss on derivative instruments	(547,756)	863,030
Changes in operating assets and liabilities
(Increase) in other assets	(2,353,604)	(477,052)
Increase in accounts payable and other liabilities	318,797	371,011
Increase/(decrease) in accrued interest payable	523,996	(1,435)
Net cash provided by operating activities	5,216,690	3,092,525
Cash flows from investing activities
Acquisitions of mortgage loans	(334,162,044)
Proceeds from principal repayments on mortgage loans	7,911,106
Acquisitions of real estate securities, net of change in payable for real estate securities purchased	(365,230,804)	(83,122,058)
Proceeds from principal repayments on real estate securities	39,852,360	16,239,203
Proceeds from sales of real estate securities, net of changes in receivable for real estate securities sold	282,838,041	64,759,903
Restricted cash provided by/(used) in investment activities	736,347	(1,406,901)
Net cash used in investing activities	(368,054,994)	(3,529,853)
Cash flows from financing activities
Proceeds from issuance of common stock, net	118,862,500
Proceeds from issuance of preferred stock, net		115,499
Payment of common stock repurchase liability	(5,750,512)
Borrowings from loan repurchase facility	331,212,319
Repayments of loan repurchase facility	(90,734,518)
Borrowings from securities repurchase agreements	334,766,809	61,890,233
Repayments of securities repurchase agreements	(316,784,950)	(49,358,331)
Dividends on common stock and distributions on OP units (net of dividends and distributions payable)	(5,961,526)	(3,264,426)
Repurchase of preferred stock including dividend	(148,379)	(7,112)
Equity raise payments	(216,658)
Net cash provided by financing activities	365,245,085	9,375,863
Net increase in cash	2,406,781	8,938,535
Cash
Beginning of period	19,061,110	6,326,724
End of period	21,467,891	15,265,259
Supplemental disclosure of cash flow information
Interest paid on loan repurchase facility and securities repurchase agreements	3,479,958	1,016,138
Taxes paid