CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets
Residential mortgage investments ($13.48 and $13.54 billion pledged at June 30, 2016 and December 31, 2015, respectively)	$ 13,901,543	$ 14,154,737
Cash collateral receivable from interest rate swap counterparties	93,170	50,193
Interest rate swap agreements at fair value	24	7,720
Cash and cash equivalents	129,171	54,185
Receivables and other assets	179,449	179,531
Total assets	14,303,357	14,446,366
Liabilities
Secured borrowings	12,802,629	12,958,394
Interest rate swap agreements at fair value	62,003	26,061
Unsecured borrowings	98,040	97,986
Common stock dividend payable	22,738	25,979
Accounts payable and accrued expenses	36,825	39,622
Total liabilities	13,022,235	13,148,042
Stockholders' equity
Common stock - $0.01 par value; 250,000 shares authorized: 95,947 and 95,825 shares issued and outstanding at June 30, 2016 and December 31, 2015, respectively	959	958
Paid-in capital	1,305,893	1,310,563
Accumulated deficit	(346,464)	(346,464)
Accumulated other comprehensive income	122,403	136,095
Total stockholders' equity	1,281,122	1,298,324
Total liabilities and equity	14,303,357	14,446,366
Redeemable Preferred Stock [Member] | Cumulative Redeemable Preferred Stock, Series E [Member]
Stockholders' equity
Preferred stock - $0.10 par value; 100,000 shares authorized: 7.50% Cumulative Redeemable Preferred Stock, Series E, 8,204 and 8,156 shares issued and outstanding ($205,107 and $203,902 aggregate liquidation preferences) at June 30, 2016 and December 31, 2015, respectively	$ 198,331	$ 197,172