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Mortgage Backed Securities Mortgage backed securities (Tables)
6 Months Ended
Jun. 30, 2016
Schedule of Available-for-sale Securities [Line Items]  
Available-for-sale Securities
The following tables present the Company’s MBS by investment type as of the dates indicated:
 
June 30, 2016
 
Par
 
Net Premium (Discount)
 
Amortized Cost
 
Gross Unrealized Gain
 
Gross Unrealized Loss
 
Fair Value
 
WAC (1)
RMBS:
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency
$
1,329,159

 
$
65,558

 
$
1,394,717

 
$
7,031

 
$
(8,545
)
 
$
1,393,203

 
3.03
%
Non-Agency
55,603

 
(29
)
 
55,574

 
82

 
(418
)
 
55,238

 
3.56
%
 
1,384,762

 
65,529

 
1,450,291

 
7,113

 
(8,963
)
 
1,448,441

 
 
CMBS:
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency
856,352

 
10,713

 
867,065

 
37,329

 
(82
)
 
904,312

 
3.40
%
Non-Agency
117,696

 
(7,671
)
 
110,025

 
8,511

 

 
118,536

 
5.00
%
 
974,048

 
3,042

 
977,090

 
45,840

 
(82
)
 
1,022,848

 
 
CMBS IO (2):
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency

 
386,628

 
386,628

 
7,732

 
(889
)
 
393,471

 
0.67
%
Non-Agency

 
342,101

 
342,101

 
3,606

 
(1,732
)
 
343,975

 
0.60
%
 

 
728,729

 
728,729

 
11,338

 
(2,621
)
 
737,446

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


Total AFS securities:
$
2,358,810

 
$
797,300

 
$
3,156,110

 
$
64,291

 
$
(11,666
)
 
$
3,208,735

 
 
(1)
The current weighted average coupon ("WAC") is the gross interest rate of the pool of mortgages underlying the security weighted by the outstanding principal balance (or by notional balance in the case of an IO security).
(2)
The notional balance for Agency CMBS IO and non-Agency CMBS IO was $12,078,342 and $10,597,035, respectively, as of June 30, 2016.
 
December 31, 2015
 
Par
 
Net Premium (Discount)
 
Amortized Cost
 
Gross Unrealized Gain
 
Gross Unrealized Loss
 
Fair Value
 
WAC (1)
RMBS:
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency
$
1,536,733

 
$
77,617

 
$
1,614,350

 
$
4,362

 
$
(20,190
)
 
$
1,598,522

 
3.03
%
Non-Agency
66,003

 
(45
)
 
65,958

 
70

 
(818
)
 
65,210

 
3.25
%
 
1,602,736

 
77,572

 
1,680,308

 
4,432

 
(21,008
)
 
1,663,732

 
 
CMBS:
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency
876,751

 
13,252

 
890,003

 
10,542

 
(14,614
)
 
885,931

 
3.45
%
Non-Agency
156,218

 
(8,133
)
 
148,085

 
7,039

 
(941
)
 
154,183

 
4.29
%
 
1,032,969

 
5,119

 
1,038,088

 
17,581

 
(15,555
)
 
1,040,114

 
 
CMBS IO (2):
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency

 
421,857

 
421,857

 
5,922

 
(1,651
)
 
426,128

 
0.80
%
Non-Agency

 
365,554

 
365,554

 
1,992

 
(3,819
)
 
363,727

 
0.71
%
 

 
787,411

 
787,411

 
7,914

 
(5,470
)
 
789,855

 
 



 
 
 


 


 
 
 


 
 
Total AFS securities:
$
2,635,705

 
$
870,102

 
$
3,505,807

 
$
29,927

 
$
(42,033
)
 
$
3,493,701

 


 
 
 
 
 
 
 
 
 
 
 
 
 



(1)
The current weighted average coupon ("WAC") is the gross interest rate of the pool of mortgages underlying the security weighted by the outstanding principal balance (or by notional balance in the case of an IO security).
(2)
The notional balance for the Agency CMBS IO and non-Agency CMBS IO was $12,180,291 and $10,328,628, respectively, as of December 31, 2015.
Schedule of Realized Gain (Loss)
The following table presents information regarding the sales included in "(loss) gain on sale of investments, net" on the Company's consolidated statements of comprehensive income for the periods indicated:
 
Three Months Ended
 
June 30,
 
2016
 
2015
 
Proceeds Received
 
Realized Gain (Loss)
 
Proceeds Received
 
Realized Gain (Loss)
Agency RMBS
$
10,287

 
$
(297
)
 
$
96,025

 
$
(1,875
)
Agency CMBS

 

 
98,887

 
(822
)
Non-Agency CMBS IO

 

 
31,972

 
1,206

 
$
10,287

 
$
(297
)
 
$
226,884

 
$
(1,491
)
 
Six Months Ended
 
June 30,
 
2016
 
2015
 
Proceeds Received
 
Realized Gain (Loss)
 
Proceeds Received
 
Realized Gain (Loss)
Agency RMBS
$
54,178

 
$
(3,010
)
 
$
156,370

 
$
(2,196
)
Agency CMBS

 

 
98,887

 
(822
)
Non-Agency CMBS
33,640

 
(1,228
)
 

 

Agency CMBS IO

 

 
29,385

 
1,474

Non-Agency CMBS IO

 

 
44,764

 
1,361

 
$
87,818

 
$
(4,238
)
 
$
329,406

 
$
(183
)

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
The following table presents certain information for those MBS in an unrealized loss position as of the dates indicated:
 
June 30, 2016
 
December 31, 2015
 
Fair Value
 
Gross Unrealized Losses
 
# of Securities
 
Fair Value
 
Gross Unrealized Losses
 
# of Securities
Continuous unrealized loss position for less than 12 months:
 
 
 
 
 
 
 
 
 
 
 
Agency MBS
$
322,585

 
$
(2,095
)
 
45
 
$
1,332,849

 
$
(19,062
)
 
109
Non-Agency MBS
89,794

 
(807
)
 
20
 
351,650

 
(5,347
)
 
72
 
 
 
 
 
 
 
 
 
 
 
 
Continuous unrealized loss position for 12 months or longer:
 
 
 
 
 
 
 
 
 
 
 
Agency MBS
$
368,509

 
$
(7,421
)
 
55
 
$
775,484

 
$
(17,393
)
 
72
Non-Agency MBS
92,521

 
(1,343
)
 
28
 
8,306

 
(231
)
 
7