XML 23 R10.htm IDEA: XBRL DOCUMENT v3.10.0.1
Debt Securities
 12 Months Ended
Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]  
Debt Securities
Debt Securities

The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of the Company’s debt securities:

 
December 31, 2018
 
Amortized Cost
 
Gross Unrealized
 
Fair Value
(Dollars in thousands)
 
Gains
 
Losses
 
Available-for-sale
 
 
 
 
 
 
 
U.S. government and federal agency
$
23,757

 
54

 
(162
)
 
23,649

U.S. government sponsored enterprises
120,670

 
52

 
(514
)
 
120,208

State and local governments
844,636

 
18,936

 
(11,322
)
 
852,250

Corporate bonds
292,052

 
378

 
(1,613
)
 
290,817

Residential mortgage-backed securities
808,537

 
628

 
(16,250
)
 
792,915

Commercial mortgage-backed securities
490,868

 
3,312

 
(2,356
)
 
491,824

Total available-for-sale
2,580,520

 
23,360

 
(32,217
)
 
2,571,663

Held-to-maturity
 
 
 
 
 
 
 
State and local governments
297,915

 
1,380

 
(11,039
)
 
288,256

Total held-to-maturity
297,915

 
1,380

 
(11,039
)
 
288,256

Total debt securities
$
2,878,435

 
24,740

 
(43,256
)
 
2,859,919


Note 2. Debt Securities (continued)

 
December 31, 2017
 
Amortized Cost
 
Gross Unrealized
 
Fair Value
(Dollars in thousands)
 
Gains
 
Losses
 
Available-for-sale
 
 
 
 
 
 
 
U.S. government and federal agency
$
31,216

 
54

 
(143
)
 
31,127

U.S. government sponsored enterprises
19,195

 
—

 
(104
)
 
19,091

State and local governments
614,366

 
20,299

 
(5,164
)
 
629,501

Corporate bonds
216,443

 
802

 
(483
)
 
216,762

Residential mortgage-backed securities
785,960

 
1,253

 
(7,930
)
 
779,283

Commercial mortgage-backed securities
104,324

 
25

 
(1,870
)
 
102,479

Total available-for-sale
1,771,504

 
22,433

 
(15,694
)
 
1,778,243

Held-to-maturity
 
 
 
 
 
 
 
State and local governments
648,313

 
20,346

 
(8,573
)
 
660,086

Total held-to-maturity
648,313

 
20,346

 
(8,573
)
 
660,086

Total debt securities
$
2,419,817

 
42,779

 
(24,267
)
 
2,438,329



On November 30, 2018, the Company early adopted FASB ASU 2017-12, Derivatives and Hedging, and in doing so redesignated state and local government securities with a carrying value of $270,331,000, from held-to-maturity classification to available-for-sale classification. The Company considers the available-for-sale classification of these debt securities to be appropriate since it no longer had the intent to hold them to maturity. No gain or loss was recorded at the time of transfer. For additional information on FASB ASU 2017-12, Derivatives and Hedging, see Note 1.

The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at December 31, 2018. Actual maturities may differ from expected or contractual maturities since issuers have the right to prepay obligations with or without prepayment penalties.

 
December 31, 2018
 
Available-for-Sale
 
Held-to-Maturity
(Dollars in thousands)
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair Value
Due within one year
$
141,771

 
141,356

 
—

 
—

Due after one year through five years
316,311

 
314,777

 
6,457

 
6,527

Due after five years through ten years
311,194

 
314,961

 
75,204

 
74,100

Due after ten years
511,839

 
515,830

 
216,254

 
207,629

 
1,281,115

 
1,286,924

 
297,915

 
288,256

Mortgage-backed securities 1
1,299,405

 
1,284,739

 
—

 
—

Total
$
2,580,520

 
2,571,663

 
297,915

 
288,256


______________________________
1 Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.

Note 2. Debt Securities (continued)

Proceeds from sales and calls of debt securities and the associated gains and losses that have been included in earnings are listed below:

 
Years ended
(Dollars in thousands)
December 31,
2018
 
December 31,
2017
 
December 31,
2016
Available-for-sale
 
 
 
 
 
Proceeds from sales and calls of debt securities
$
265,587

 
280,783

 
212,140

Gross realized gains 1
443

 
3,369

 
2,459

Gross realized losses 1
(455
)
 
(4,005
)
 
(3,794
)
Held-to-maturity
 
 
 
 
 
Proceeds from calls of debt securities
79,000

 
23,020

 
25,405

Gross realized gains 1
101

 
204

 
97

Gross realized losses 1
(1,202
)
 
(228
)
 
(225
)

______________________________
1 The gain or loss on the sale or call of each debt security is determined by the specific identification method.

At December 31, 2018 and 2017, the Company had debt securities with carrying values of $1,333,455,000 and $1,447,808,000, respectively, pledged as collateral for FHLB advances, FRB discount window borrowings, securities sold under agreements to repurchase (“repurchase agreements”), interest rate swap agreements and deposits of several local government units.

Debt securities with an unrealized loss position are summarized as follows:
 
 
December 31, 2018
 
Less than 12 Months
 
12 Months or More
 
Total
(Dollars in thousands)
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
Available-for-sale
 
 
 
 
 
 
 
 
 
 
 
U.S. government and federal agency
$
4,287

 
(27
)
 
10,519

 
(135
)
 
14,806

 
(162
)
U.S. government sponsored enterprises
43,400

 
(103
)
 
35,544

 
(411
)
 
78,944

 
(514
)
State and local governments
72,080

 
(922
)
 
232,244

 
(10,400
)
 
304,324

 
(11,322
)
Corporate bonds
119,111

 
(937
)
 
114,800

 
(676
)
 
233,911

 
(1,613
)
Residential mortgage-backed securities
132,405

 
(833
)
 
537,202

 
(15,417
)
 
669,607

 
(16,250
)
Commercial mortgage-backed securities
73,118

 
(402
)
 
86,504

 
(1,954
)
 
159,622

 
(2,356
)
Total available-for-sale
$
444,401

 
(3,224
)
 
1,016,813

 
(28,993
)
 
1,461,214

 
(32,217
)
Held-to-maturity
 
 
 
 
 
 
 
 
 
 
 
State and local governments
$
87,392

 
(2,778
)
 
126,226

 
(8,261
)
 
213,618

 
(11,039
)
Total held-to-maturity
$
87,392

 
(2,778
)
 
126,226

 
(8,261
)
 
213,618

 
(11,039
)
 
Note 2. Debt Securities (continued)

 
December 31, 2017
 
Less than 12 Months
 
12 Months or More
 
Total
(Dollars in thousands)
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
Available-for-sale
 
 
 
 
 
 
 
 
 
 
 
U.S. government and federal agency
$
1,208

 
(5
)
 
13,179

 
(138
)
 
14,387

 
(143
)
U.S. government sponsored enterprises
14,926

 
(56
)
 
3,425

 
(48
)
 
18,351

 
(104
)
State and local governments
61,126

 
(689
)
 
121,181

 
(4,475
)
 
182,307

 
(5,164
)
Corporate bonds
99,636

 
(264
)
 
29,034

 
(219
)
 
128,670

 
(483
)
Residential mortgage-backed securities
372,175

 
(3,050
)
 
254,721

 
(4,880
)
 
626,896

 
(7,930
)
Commercial mortgage-backed securities
37,650

 
(469
)
 
62,968

 
(1,401
)
 
100,618

 
(1,870
)
Total available-for-sale
$
586,721

 
(4,533
)
 
484,508

 
(11,161
)
 
1,071,229

 
(15,694
)
Held-to-maturity
 
 
 
 
 
 
 
 
 
 
 
State and local governments
$
21,207

 
(186
)
 
105,486

 
(8,387
)
 
126,693

 
(8,573
)
Total held-to-maturity
$
21,207

 
(186
)
 
105,486

 
(8,387
)
 
126,693

 
(8,573
)


Based on an analysis of its debt securities with unrealized losses as of December 31, 2018 and 2017, the Company determined that none of such securities had other-than-temporary impairment and the unrealized losses were primarily the result of interest rate changes and market spreads subsequent to acquisition. The fair value of the debt securities is expected to recover as payments are received and the securities approach maturity. At December 31, 2018, management determined that it did not intend to sell debt securities with unrealized losses, and there was no expected requirement to sell any of its debt securities with unrealized losses before recovery of their amortized cost.