Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	1 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2013
Cash flows from operating activities:
Net income (loss)	$ 4,261	$ (56,153)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Premium amortization and (discount accretion), net	1,567	14,199
Restricted stock amortization expense	54	505
Unrealized loss (gain) on Residential mortgage-backed securities and other securities, net	(2,983)	211,045
Mark-to-market adjustments on linked transactions		(711)
Mark-to-market adjustments on derivative instruments	5,269	(90,303)
Other loss on Residential mortgage-backed securities	87	5,801
Realized loss (gain) on sale of Residential mortgage-backed securities and other securities, net	(1,157)	17,743
Realized loss on sale of Agency Interest-Only Strips accounted for as derivatives, net		99
Realized loss on TBAs, net		2,563
Realized gain on sale of swaptions, net		(1,038)
Realized loss on expiration of option derivatives, net		925
Realized gain on linked transaction, net		(3,748)
Realized gain on termination of swaps		(8,895)
Changes in operating assets and liabilities:
Decrease (increase) in accrued interest receivable	(7,076)	2,253
Increase in other assets	(552)	(406)
Increase (decrease) in accrued interest payable	1,000	(674)
Increase in accounts payable and accrued expenses	432	323
Increase in payable to related party	407	92
Net cash provided by operating activities	1,309	93,620
Cash flows from investing activities:
Purchase of Residential mortgage-backed securities and other securities	(2,158,676)	(1,725,304)
Purchase of securities underlying linked transactions		(76,408)
Proceeds from sale of Residential mortgage-backed securities and other securities	237,390	2,209,607
Proceeds from sale of securities underlying linked transactions		21,733
Principal payments and basis recovered on Residential mortgage-backed securities	8,399	156,970
Principal payments on securities underlying linked transactions		1,043
Payment of premium for option derivatives		(4,675)
Premium received from option derivatives		3,750
Proceeds from gross settlement of TBAs		208,312
Net settlements of TBAs		(2,058)
Proceeds from sale of interest rate swaptions		16,325
Payment of premium for interest rate swaptions		(23,544)
Net cash provided by (used in) investing activities	(1,912,887)	785,751
Cash flows from financing activities:
Proceeds from issuance of common stock	160,000
Proceeds from private placements of units and common stock (concurrent with initial public offering)	45,557
Redemption of common stock	(1)
Payment of offering costs		(67)
Proceeds from repurchase agreement borrowings	3,192,929	20,074,104
Proceeds from repurchase agreements underlying linked transactions		86,245
Repayments of repurchase agreement borrowings	(1,456,436)	(20,907,205)
Repayments of repurchase agreements underlying linked transactions		(82,960)
Repayment of cash overdraft		(5,666)
Due from counterparties	(8,000)	(80,267)
Due to counterparties	4,309	39,000
Dividends on common stock		(50,131)
Net cash provided by (used in) financing activities	1,938,358	(926,947)
Net increase (decrease) in cash and cash equivalents	26,780	(47,576)
Cash and cash equivalents beginning of period	1	56,292
Cash and cash equivalents end of period	26,781	8,716
Supplemental disclosure of operating cash flow information:
Interest paid	446	11,681
Interest rate swaps terminated, not settled		8,895
Mortgage-backed securities recorded upon unlinking of linked transactions		53,159
Supplemental disclosure of non-cash financing/investing activities:
Offering costs to be settled with related party	1,200
Mortgage-backed securities sold, not settled	102,336	3,465
Mortgage-backed securities purchased, not settled	(106,019)	(22,167)
Mortgage-backed securities used to settle TBAs		208,817
Dividends and distributions declared, not paid		$ 21,878