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Investment Securities Available For Sale (Tables)
12 Months Ended
Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale Securities Reconciliation
Investment securities available for sale consisted of the following as of December 31, 2016 and December 31, 2015 (dollar amounts in thousands):

 
December 31, 2016
 
December 31, 2015
 
Amortized Costs
 
Unrealized
 
Fair Value
 
Amortized Costs
 
Unrealized
 
Fair Value
 
 
Gains
 
Losses
 
 
 
Gains
 
Losses
 
Agency RMBS (1):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Agency ARMs
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Freddie Mac
$
39,138

 
$
24

 
$
(528
)
 
$
38,634

 
$
62,383

 
$
41

 
$
(770
)
 
$
61,654

Fannie Mae
69,031

 
71

 
(698
)
 
68,404

 
92,605

 
121

 
(1,334
)
 
91,392

Ginnie Mae
6,011

 

 
(204
)
 
5,807

 
20,172

 
55

 
(260
)
 
19,967

Total Agency ARMs
114,180

 
95

 
(1,430
)
 
112,845

 
175,160

 
217

 
(2,364
)
 
173,013

Agency Fixed Rate
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Freddie Mac
26,338

 

 
(644
)
 
25,694

 
31,076

 

 
(719
)
 
30,357

Fannie Mae
312,515

 

 
(10,035
)
 
302,480

 
380,684

 

 
(12,149
)
 
368,535

Ginnie Mae
457

 

 
(4
)
 
453

 
25,923

 
9

 
(111
)
 
25,821

Total Agency Fixed Rate
339,310

 

 
(10,683
)
 
328,627

 
437,683

 
9

 
(12,979
)
 
424,713

Agency IOs (1)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Freddie Mac
19,768

 
559

 
(3,363
)
 
16,964

 
28,970

 
680

 
(4,471
)
 
25,179

Fannie Mae
27,597

 
478

 
(4,777
)
 
23,298

 
39,603

 
433

 
(6,341
)
 
33,695

Ginnie Mae
49,788

 
1,223

 
(6,382
)
 
44,629

 
63,050

 
511

 
(7,045
)
 
56,516

Total Agency IOs
97,153

 
2,260

 
(14,522
)
 
84,891

 
131,623

 
1,624

 
(17,857
)
 
115,390

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total Agency RMBS
550,643

 
2,355

 
(26,635
)
 
526,363

 
744,466

 
1,850

 
(33,200
)
 
713,116

Non-Agency RMBS
162,220

 
1,218

 
(154
)
 
163,284

 
1,727

 
51

 
(211
)
 
1,567

U.S. Treasury securities (1)
2,920

 

 
(33
)
 
2,887

 
10,113

 

 
(76
)
 
10,037

CMBS (2)
113,955

 
12,876

 
(389
)
 
126,442

 
28,692

 
12,042

 

 
40,734

Total investment securities available for sale
$
829,738

 
$
16,449

 
$
(27,211
)
 
$
818,976

 
$
784,998

 
$
13,943

 
$
(33,487
)
 
$
765,454



Weighted Average Lives of Available-for-sale Securities
The following table sets forth the weighted average lives our investment securities available for sale as of December 31, 2016 and December 31, 2015 (dollar amounts in thousands):
Weighted Average Life
December 31, 2016
 
December 31, 2015
0 to 5 years
$
606,079

 
$
518,594

Over 5 to 10 years
177,765

 
219,747

10+ years
35,132

 
27,113

Total
$
818,976

 
$
765,454

Schedule of Stated Reset Periods for Available-for-sale Securities Held in Securitization Trusts
The following tables set forth the stated interest reset periods of our investment securities available for sale and investment securities available for sale held in securitization trusts at December 31, 2016 and December 31, 2015 at carrying value (dollar amounts in thousands):
 
December 31, 2016
 
December 31, 2015
 
Less than 6 months
 
6 to 24
months
 
More than
24 months
 
Total
 
Less than 6 months
 
6 to 24
months
 
More than
24 months
 
Total
Agency RMBS
$
53,043

 
$
27,272

 
$
446,048

 
$
526,363

 
$
92,693

 
$
44,700

 
$
575,723

 
$
713,116

Non-Agency RMBS
50,080

 

 
113,204

 
163,284

 
188

 
1,379

 

 
1,567

U.S. Treasury securities

 

 
2,887

 
2,887

 
10,037

 

 

 
10,037

CMBS
82,545

 

 
43,897

 
126,442

 

 

 
40,734

 
40,734

Total investment securities available for sale
$
185,668

 
$
27,272

 
$
606,036

 
$
818,976

 
$
102,918

 
$
46,079

 
$
616,457

 
$
765,454

Investment Securities Available-for-sale in an Unrealized Loss Position
The following tables present the Company's investment securities available for sale in an unrealized loss position reported through OCI, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2016 and December 31, 2015 (dollar amounts in thousands):

December 31, 2016
Less than 12 Months
 
Greater than 12 months
 
Total
 
Carrying
Value
 
Gross
Unrealized
Losses
 
Carrying
Value
 
Gross
Unrealized
Losses
 
Carrying
Value
 
Gross
Unrealized
Losses
Agency RMBS
$
96,357

 
$
(1,290
)
 
$
328,474

 
$
(10,819
)
 
$
424,831

 
$
(12,109
)
Non-Agency RMBS

 

 
596

 
(154
)
 
596

 
(154
)
CMBS
16,523

 
(389
)
 

 

 
16,523

 
(389
)
Total investment securities available for sale
$
112,880

 
$
(1,679
)
 
$
329,070

 
$
(10,973
)
 
$
441,950

 
$
(12,652
)


    
December 31, 2015
Less than 12 Months
 
Greater than 12 months
 
Total
 
Carrying
Value
 
Gross
Unrealized
Losses
 
Carrying
Value
 
Gross
Unrealized
Losses
 
Carrying
Value
 
Gross
Unrealized
Losses
Agency RMBS
$
71,587

 
$
(688
)
 
$
476,157

 
$
(14,497
)
 
$
547,744

 
$
(15,185
)
Non-Agency RMBS
771

 

 
796

 
(211
)
 
1,567

 
(211
)
CMBS

 

 

 

 

 

Total investment securities available for sale
$
72,358

 
$
(688
)
 
$
476,953

 
$
(14,708
)
 
$
549,311

 
$
(15,396
)