Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities
Net (loss) / income	$ (5,595,182)	$ 9,561,168
Adjustments to reconcile net (loss) / income to net cash provided by operating activities
Net (accretion)/amortization of (discounts)/premiums related to real estate securities	(1,566,256)	(873,704)
Net accretion of discounts related to mortgage loans	(259,435)
Change in unrealized loss/(gain) on real estate securities	14,739,365	(9,392,927)
Change in unrealized (gain) on mortgage loans	(1,567,291)
Realized loss on real estate securities	246,055	1,951,862
Realized (gain) on mortgage loans	(66,244)
Change in unrealized (gain)/loss on derivative instruments	(3,244,803)	650,448
Changes in operating assets and liabilities
(Increase) / decrease in other assets	(302,375)	46,722
Increase / (decrease) in accounts payable and other liabilities	788,610	(358,638)
Increase / (decrease) in accrued interest payable	361,927	(799)
Net cash provided by operating activities	3,534,371	1,584,132
Cash flows from investing activities
Acquisitions of real estate securities, net of change in payable for real estate securities purchased	(344,623,655)	(72,680,829)
Proceeds from principal repayments on real estate securities	24,639,160	10,230,669
Proceeds from sale of real estate securities, net of changes in receivable for real estate securities sold	53,913,098	28,759,376
Acquisition of mortgage loans	(119,758,049)
Proceeds from principal repayments on mortgage loans	867,594
Restricted cash used in investment activities	(8,777,793)	(565,997)
Net cash used in investing activities	(393,739,645)	(34,256,781)
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 repurchase agreements	287,941,369	49,598,893
Repayments of repurchase agreements	(95,524,421)	(17,054,902)
Borrowings from loan repurchase facility	89,112,325
Dividends on common stock and distributions on OP units (net of dividends and distributions payable)	(1,957,516)	(3,264,427)
Repurchase of preferred stock including dividend	(148,379)	(7,574)
Equity raise payments	(216,658)
Net cash provided by financing activities	392,318,708	29,387,489
Net increase/(decrease) in cash	2,113,434	(3,285,160)
Cash
Beginning of period	19,061,110	6,326,724
End of period	21,174,544	3,041,564
Supplemental disclosure of cash flow information
Interest paid on repurchase agreements and loan repurchase facility	1,308,888	667,946
Taxes paid