Consolidated Statements Of Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest Income
Residential loans		$ 25,808	$ 13,601	$ 50,817	$ 26,259
Commercial loans		12,679	11,217	23,593	21,601
Real estate securities		24,839	33,170	52,614	65,601
Other interest income		47	5	95	8
Total interest income		63,373	57,993	127,119	113,469
Interest Expense
Short-term debt		(6,527)	(5,142)	(13,751)	(8,969)
Asset-backed securities issued		(5,645)	(8,183)	(11,847)	(16,624)
Long-term debt		(10,836)	(7,826)	(21,371)	(14,618)
Total interest expense		(23,008)	(21,151)	(46,969)	(40,211)
Net Interest Income		40,365	36,842	80,150	73,258
Reversal of (provision for) loan losses		261	315	55	(967)
Net Interest Income After Provision		40,626	37,157	80,205	72,291
Noninterest Income
Mortgage banking and investment activities	[1]	5,659	2,189	6,437	(4,181)
Mortgage servicing rights income (loss), net		830	(1,777)	(10,094)	(1,171)
Other income		1,299	0	2,108	0
Realized gains, net		6,316	1,063	10,622	2,155
Total non-interest income (loss)		14,104	1,475	9,073	(3,197)
Operating expenses		(25,218)	(22,282)	(50,281)	(42,254)
Net income before provision for income taxes		29,512	16,350	38,997	26,840
(Provision for) benefit from income taxes		(2,448)	(333)	2,868	1,510
Net Income		$ 27,064	$ 16,017	$ 41,865	$ 28,350
Basic earnings per common share (usd per share)		$ 0.31	$ 0.19	$ 0.48	$ 0.33
Diluted earnings per common share (usd per share)		0.31	0.18	0.47	0.32
Regular dividends declared per common share (usd per share)		$ 0.28	$ 0.28	$ 0.56	$ 0.56
Basic weighted average shares outstanding (shares)		83,936,844	82,740,012	83,650,170	82,575,636
Diluted weighted average shares outstanding (shares)		94,949,741	85,032,998	85,473,905	84,994,321

[1] For the three months ended June 30, 2015, there were no other-than-temporary impairments. For the three months ended June 30, 2014, other-than-temporary impairments were $2,915, of which $264 were recognized through the Income Statement and $2,651 were recognized in Accumulated Other Comprehensive Income.For the six months ended June 30, 2015, there were no other-then-temporary impairments. For the six months ended June 30, 2014, other-than-temporary impairments were $4,585, of which $377 were recognized through the Income Statement, and $4,208 were recognized in Accumulated Other Comprehensive Income.