Annual report pursuant to Section 13 and 15(d)

SECURITIES (Tables)

v3.20.4
SECURITIES (Tables)
12 Months Ended
Dec. 31, 2020
Amortized Cost of HTM Securities by Security Type and Credit Rating

The following table presents the amortized cost of HTM securities as of December 31, 2020 by security type and credit rating (dollars in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

U.S. Government and Agency

    

Obligations of states and political

    

Mortgage-backed

    

Total HTM

​

​

securities

​

subdivisions

​

securities

​

securities

Credit Rating:

​

 

​

​

 

​

​

​

​

​

​

​

AAA/AA/A

​

$

—

​

$

532,157

​

$

—

​

$

532,157

Not Rated - Agency(1)

​

​

2,751

​

​

—

​

​

5,333

​

​

8,084

Not Rated - Non-Agency

​

​

—

​

 

4,610

​

​

—

​

​

4,610

Total

​

$

2,751

​

$

536,767

​

$

5,333

​

$

544,851

(1) Generally considered not to have credit risk given the government guarantees associated with these agencies

Gross Realized Gain and Losses on the Sale of Securities

The following table presents the gross realized gains and losses on and the proceeds from the sale of securities during the years ended December 31, 2020, 2019, and 2018 (dollars in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

    

2020

    

2019

    

2018

Realized gains (losses):

​

​

​

​

​

​

​

​

​

Gross realized gains

 

$

12,522

 

$

9,530

 

$

4,221

Gross realized losses

​

 

(228)

​

 

(1,855)

​

 

(3,838)

Net realized gains

 

$

12,294

 

$

7,675

 

$

383

Proceeds from sales of securities

 

$

257,945

 

$

514,070

 

$

515,764

Available-for-sale Securities  
Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Values of Investment Securities

The amortized cost, gross unrealized gains and losses, and estimated fair values of AFS securities as of December 31, 2020 are summarized as follows (dollars in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Amortized

​

Gross Unrealized

​

Estimated

​

    

Cost

    

Gains

    

(Losses)

    

Fair Value

December 31, 2020

 

​

  

 

​

  

 

​

  

​

​

  

U.S. government and agency securities

​

$

13,009

​

$

437

​

$

(52)

​

$

13,394

Obligations of states and political subdivisions

​

 

786,466

​

 

50,878

​

 

(18)

​

 

837,326

Corporate and other bonds (1)

​

 

148,747

​

 

2,430

​

 

(99)

​

 

151,078

Commercial mortgage-backed securities

​

 

​

​

​

​

​

​

​

​

 

​

Agency

​

​

321,015

​

 

16,277

​

 

(2)

​

​

337,290

Non-agency

​

​

51,244

​

 

167

​

 

(17)

​

​

51,394

Total commercial mortgage-backed securities

​

​

372,259

​

 

16,444

​

 

(19)

​

​

388,684

Residential mortgage-backed securities

​

​

​

​

​

​

​

​

​

​

​

​

Agency

​

​

1,012,237

​

 

31,816

​

 

(1,946)

​

​

1,042,107

Non-agency

​

​

104,904

​

 

1,507

​

 

(206)

​

​

106,205

Total residential mortgage-backed securities

​

​

1,117,141

​

 

33,323

​

 

(2,152)

​

​

1,148,312

Other securities

​

 

1,625

​

 

—

​

 

—

​

 

1,625

Total AFS securities

​

$

2,439,247

​

$

103,512

​

$

(2,340)

​

$

2,540,419

(1) Other bonds includes asset-backed securities.

​

The amortized cost, gross unrealized gains and losses, and estimated fair values of AFS securities as of December 31, 2019 are summarized as follows (dollars in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Amortized

​

Gross Unrealized

​

Estimated

​

    

Cost

    

Gains

    

(Losses)

    

Fair Value

December 31, 2019

​

​

​

​

​

​

​

​

​

​

​

​

U.S. government and agency securities

​

$

21,149

​

$

209

​

$

(38)

​

$

21,320

Obligations of states and political subdivisions

​

​

421,344

​

​

25,776

​

​

(29)

​

​

447,091

Corporate and other bonds (1)

​

 

134,342

​

 

1,991

​

 

(374)

​

 

135,959

Commercial mortgage-backed securities

​

 

​

​

 

​

​

 

​

​

 

​

Agency

​

​

405,731

​

​

8,786

​

​

(619)

​

​

413,898

Non-agency

​

​

11,173

​

​

—

​

​

(24)

​

​

11,149

Total commercial mortgage-backed securities

​

​

416,904

​

​

8,786

​

​

(643)

​

​

425,047

Residential mortgage-backed securities

​

​

​

​

​

​

​

​

​

​

​

​

Agency

​

​

852,300

​

​

16,680

​

​

(816)

​

​

868,164

Non-agency

​

​

44,309

​

​

476

​

​

—

​

​

44,785

Total residential mortgage-backed securities

​

​

896,609

​

​

17,156

​

​

(816)

​

​

912,949

Other securities

​

 

3,079

​

 

—

​

 

—

​

 

3,079

Total AFS securities

​

$

1,893,427

​

$

53,918

​

$

(1,900)

​

$

1,945,445

(1) Other bonds includes asset-backed securities.
Schedule of Gross Unrealized Losses and Fair Value of Investments

The following table shows the gross unrealized losses and fair value of the Company’s AFS securities with unrealized losses for which an ACL has not been recorded at December 31, 2020 and that are not deemed to be OTTI as of December 31, 2019. These are aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position (dollars in thousands).

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Less than 12 months

​

More than 12 months

​

Total

​

    

Fair

    

Unrealized

    

Fair

    

Unrealized

    

Fair

    

Unrealized

​

​

Value

​

Losses

​

Value

​

Losses

​

Value

​

Losses

December 31, 2020

 

​

  

 

​

  

 

​

  

 

​

  

 

​

  

 

​

  

U.S. government and agency securities

​

$

—

​

$

—

​

$

5,456

​

$

(52)

​

$

5,456

​

​

(52)

Obligations of states and political subdivisions

​

​

5,091

​

​

(18)

​

​

—

​

​

—

​

​

5,091

​

$

(18)

Corporate and other bonds(1)

​

 

17,946

​

 

(52)

​

 

10,698

​

 

(47)

​

 

28,644

​

 

(99)

Commercial mortgage-backed securities

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Agency

​

​

5,893

​

​

(2)

​

​

376

​

​

—

​

​

6,269

​

​

(2)

Non-agency

​

​

17,654

​

​

(17)

​

​

—

​

​

—

​

​

17,654

​

​

(17)

Total commercial mortgage-backed securities

​

​

23,547

​

​

(19)

​

​

376

​

​

—

​

​

23,923

​

​

(19)

Residential mortgage-backed securities

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Agency

​

​

219,388

​

​

(1,944)

​

​

1,055

​

​

(2)

​

​

220,443

​

​

(1,946)

Non-agency

​

​

36,942

​

​

(206)

​

​

—

​

​

—

​

​

36,942

​

​

(206)

Total residential mortgage-backed securities

​

​

256,330

​

​

(2,150)

​

​

1,055

​

​

(2)

​

​

257,385

​

​

(2,152)

Total AFS securities

​

$

302,914

​

$

(2,239)

​

$

17,585

​

$

(101)

​

$

320,499

​

$

(2,340)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

December 31, 2019

​

 

  

​

 

  

​

 

  

​

 

  

​

 

  

​

 

  

U.S. government and agency securities

​

$

7,638

​

$

(38)

​

$

—

​

$

—

​

$

7,638

​

$

(38)

Obligations of states and political subdivisions

​

​

4,526

​

​

(29)

​

​

—

​

​

—

​

​

4,526

​

​

(29)

Corporate and other bonds(1)

​

 

17,323

​

 

(83)

​

 

19,901

​

 

(291)

​

 

37,224

​

 

(374)

Commercial mortgage-backed securities

​

 

​

​

 

​

​

 

​

​

 

​

​

 

​

​

​

​

Agency

​

​

43,552

​

​

(530)

​

​

14,966

​

​

(89)

​

​

58,518

​

​

(619)

Non-agency

​

​

11,162

​

​

(24)

​

​

—

​

​

—

​

​

11,162

​

​

(24)

Total commercial mortgage-backed securities

​

​

54,714

​

​

(554)

​

​

14,966

​

​

(89)

​

​

69,680

​

​

(643)

Residential mortgage-backed securities

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Agency

​

​

114,147

​

​

(500)

​

​

40,168

​

​

(316)

​

​

154,315

​

​

(816)

Non-agency

​

​

—

​

​

—

​

​

—

​

​

—

​

​

—

​

​

—

Total residential mortgage-backed securities

​

​

114,147

​

​

(500)

​

​

40,168

​

​

(316)

​

​

154,315

​

​

(816)

Total AFS securities

​

$

198,348

​

$

(1,204)

​

$

75,035

​

$

(696)

​

$

273,383

​

$

(1,900)

​

(1) Other bonds includes asset-backed securities

Schedule of Amortized Cost and Estimated Fair Value of Securities

The following table presents the amortized cost and estimated fair value of AFS securities as of December 31, 2020 and 2019, by contractual maturity (dollars in thousands). Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

December 31, 2020

​

December 31, 2019

​

    

Amortized

    

Estimated

    

Amortized

    

Estimated

​

​

Cost

​

Fair Value

​

Cost

​

Fair Value

Due in one year or less

​

$

19,875

​

$

19,997

​

$

35,177

​

$

35,329

Due after one year through five years

​

 

161,448

​

 

169,103

​

 

164,605

​

 

166,873

Due after five years through ten years

​

 

235,021

​

 

242,791

​

 

249,713

​

 

254,790

Due after ten years

​

 

2,022,903

​

 

2,108,528

​

 

1,443,932

​

 

1,488,453

Total AFS securities

​

$

2,439,247

​

$

2,540,419

​

$

1,893,427

​

$

1,945,445

Held-to-maturity Securities  
Schedule of Amortized Cost and Estimated Fair Value of Securities

The following table presents the amortized cost and estimated fair value of HTM securities as of December 31, 2020 and 2019, by contractual maturity (dollars in thousands). Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

December 31, 2020

​

December 31, 2019

​

    

Carrying

    

Estimated

    

Carrying

    

Estimated

​

​

Value

​

Fair Value

​

Value

​

Fair Value

Due in one year or less

​

$

1,443

​

$

1,460

​

$

502

​

$

504

Due after one year through five years

​

 

8,577

​

 

8,893

​

 

10,258

​

 

10,539

Due after five years through ten years

​

 

1,744

​

 

1,805

​

 

1,768

​

 

1,800

Due after ten years

​

 

533,087

​

 

607,607

​

 

542,616

​

 

590,660

Total HTM securities

​

$

544,851

​

$

619,765

​

$

555,144

​

$

603,503

Schedule of Carrying Values, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities

The carrying value, gross unrealized gains and losses, and estimated fair values of HTM securities as of December 31, 2020 are summarized as follows (dollars in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Carrying

​

Gross Unrealized

​

Estimated

​

    

Value

    

Gains

    

(Losses)

​

Fair Value

December 31, 2020

 

​

  

 

​

  

 

​

  

​

​

  

U.S. government and agency securities

​

$

2,751

​

$

—

​

$

(18)

​

$

2,733

Obligations of states and political subdivisions

​

​

536,767

​

​

74,978

​

​

—

​

​

611,745

Commercial mortgage-backed securities

​

 

​

​

​

​

​

​

​

​

​

​

Agency

​

​

5,333

​

​

4

​

​

(50)

​

​

5,287

Non-agency

​

​

—

​

​

—

​

​

—

​

​

—

Total commercial mortgage-backed securities

​

​

5,333

​

​

4

​

​

(50)

​

​

5,287

Total held-to-maturity securities

​

$

544,851

​

$

74,982

​

$

(68)

​

$

619,765

​

​

The carrying value, gross unrealized gains and losses, and estimated fair values of HTM securities as of December 31, 2019 are summarized as follows (dollars in thousands):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Carrying

​

Gross Unrealized

​

Estimated

​

    

Value

    

Gains

    

(Losses)

    

Fair Value

December 31, 2019

​

 

  

​

 

  

​

 

  

​

 

  

U.S. government and agency securities

​

$

2,813

​

$

26

​

$

—

​

$

2,839

Obligations of states and political subdivisions

​

​

545,148

​

​

48,274

​

​

—

​

​

593,422

Commercial mortgage-backed securities

​

​

​

​

 

​

​

 

​

​

 

​

Agency

​

​

7,183

​

​

59

​

​

—

​

​

7,242

Non-agency

​

​

—

​

​

—

​

​

—

​

​

—

Total commercial mortgage-backed securities

​

​

7,183

​

​

59

​

​

—

​

​

7,242

Total held-to-maturity securities

​

$

555,144

​

$

48,359

​

$

—

​

$

603,503