XML 38 R28.htm IDEA: XBRL DOCUMENT v3.10.0.1
Securities (Tables)
 6 Months Ended
Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]  
Summary of Investments
The following tables present the amortized cost, gross unrealized holding gains, gross unrealized holding losses and fair value of securities by major security type and class of security:
(Dollars in thousands)
 
June 30, 2018
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Fair Value
Securities Available for Sale:
 
 
 
 
 
 
 
Obligations of U.S. government-sponsored enterprises

$171,496

 

$—

 

($6,960
)
 

$164,536

Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises
604,578

 
1,646

 
(20,540
)
 
585,684

Obligations of states and political subdivisions
935

 
2

 
—

 
937

Individual name issuer trust preferred debt securities
13,299

 
—

 
(799
)
 
12,500

Corporate bonds
13,913

 
—

 
(877
)
 
13,036

Total securities available for sale

$804,221

 

$1,648

 

($29,176
)
 

$776,693

Held to Maturity:
 
 
 
 
 
 
 
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises

$11,412

 

$—

 

($48
)
 

$11,364

Total securities held to maturity

$11,412

 

$—

 

($48
)
 

$11,364

Total securities

$815,633

 

$1,648

 

($29,224
)
 

$788,057



(Dollars in thousands)
 
December 31, 2017
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Fair Value
Securities Available for Sale:
 
 
 
 
 
 
 
Obligations of U.S. government-sponsored enterprises

$161,479

 

$—

 

($3,875
)
 

$157,604

Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises
594,944

 
3,671

 
(7,733
)
 
590,882

Obligations of states and political subdivisions
2,355

 
4

 
—

 
2,359

Individual name issuer trust preferred debt securities
18,106

 
—

 
(1,122
)
 
16,984

Corporate bonds
13,917

 
13

 
(805
)
 
13,125

Total securities available for sale

$790,801

 

$3,688

 

($13,535
)
 

$780,954

Held to Maturity:
 
 
 
 
 
 
 
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises

$12,541

 

$180

 

$—

 

$12,721

Total securities held to maturity

$12,541

 

$180

 

$—

 

$12,721

Total securities

$803,342

 

$3,868

 

($13,535
)
 

$793,675
Securities by Contractual Maturity
The schedule of maturities of debt securities available for sale and held to maturity is presented below. Mortgage-backed securities are included based on weighted average maturities, adjusted for anticipated prepayments.  All other debt securities are included based on contractual maturities.  Actual maturities may differ from amounts presented because certain issuers have the right to call or prepay obligations with or without call or prepayment penalties.
(Dollars in thousands)
Available for Sale
 
Held to Maturity
June 30, 2018
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair Value
Due in one year or less

$63,389

 

$61,419

 

$1,419

 

$1,413

Due after one year to five years
270,844

 
261,678

 
4,694

 
4,674

Due after five years to ten years
282,932

 
272,643

 
3,882

 
3,866

Due after ten years
187,056

 
180,953

 
1,417

 
1,411

Total securities

$804,221

 

$776,693

 

$11,412

 

$11,364
Securities in a Continuous Unrealized Loss Position
The following tables summarize temporarily impaired securities, segregated by length of time the securities have been in a continuous unrealized loss position:
(Dollars in thousands)
Less than 12 Months
 
12 Months or Longer
 
Total
June 30, 2018
#
 
Fair
Value
Unrealized
Losses
 
#

 
Fair
Value
Unrealized
Losses
 
#

 
Fair
Value
Unrealized
Losses
Obligations of U.S. government-sponsored enterprises
8

 

$68,737


($1,759
)
 
9

 

$95,799


($5,201
)
 
17

 

$164,536


($6,960
)
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises
39

 
279,362

(6,407
)
 
22

 
255,083

(14,181
)
 
61

 
534,445

(20,588
)
Individual name issuer trust preferred debt securities
—

 
—

—

 
5

 
12,500

(799
)
 
5

 
12,500

(799
)
Corporate bonds
6

 
2,106

(20
)
 
3

 
10,930

(857
)
 
9

 
13,036

(877
)
Total temporarily impaired securities
53

 

$350,205


($8,186
)
 
39

 

$374,312


($21,038
)
 
92

 

$724,517


($29,224
)


(Dollars in thousands)
Less than 12 Months
 
12 Months or Longer
 
Total
December 31, 2017
#

 
Fair
Value
Unrealized
Losses
 
#

 
Fair
Value
Unrealized
Losses
 
#

 
Fair
Value
Unrealized
Losses
Obligations of U.S. government-sponsored enterprises
8

 

$69,681


($798
)
 
8

 

$87,923


($3,077
)
 
16

 

$157,604


($3,875
)
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises
20

 
128,965

(613
)
 
22

 
279,693

(7,120
)
 
42

 
408,658

(7,733
)
Individual name issuer trust preferred debt securities
—

 
—

—

 
7

 
16,984

(1,122
)
 
7

 
16,984

(1,122
)
Corporate bonds
3

 
921

(5
)
 
3

 
10,980

(800
)
 
6

 
11,901

(805
)
Total temporarily impaired securities
31

 

$199,567


($1,416
)
 
40

 

$395,580


($12,119
)
 
71

 

$595,147


($13,535
)