v3.26.3
Securities (Tables)
9 Months Ended
Sep. 30, 2026
Securities  
Summary of trading securities

The fair value of trading securities is summarized as follows (in thousands).

​

​

​

​

​

​

​

​

​

​

​

September 30,

​

December 31,

​

​

  ​ ​ ​

2026

 

2025

 

U.S. Treasury securities

 

$

—

 

$

123

 

U.S. government agencies:

​

​

​

​

​

​

​

Bonds

​

​

17,583

​

​

37,222

​

Residential mortgage-backed securities

​

 

45,021

​

 

152,343

​

Collateralized mortgage obligations

​

​

14,572

​

​

58,611

​

Other

​

​

16,842

​

​

—

​

Corporate debt securities

​

​

47,598

​

​

41,136

​

States and political subdivisions

​

​

309,206

​

​

295,615

​

Private-label securitized product

​

​

14,013

​

​

9,547

​

Commercial paper

​

​

100,289

​

​

—

​

Other

​

​

31,441

​

​

22,811

​

Totals

​

$

596,565

​

$

617,408

​

Summary of amortized cost and fair value of available for sale securities

The amortized cost and fair value of available for sale and held to maturity securities are summarized as follows (in thousands).

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Available for Sale

​

​

Amortized

​

Unrealized

​

Unrealized

​

​

​

September 30, 2026

​

Cost

​

Gains

​

Losses

​

Fair Value

U.S. government agencies:

​

​

​

​

​

​

​

​

​

​

​

​

Bonds

​

$

69,057

​

$

58

​

$

(434)

​

$

68,681

Residential mortgage-backed securities

​

 

381,682

​

 

103

​

 

(34,852)

​

 

346,933

Commercial mortgage-backed securities

​

​

275,588

​

 

2

​

 

(6,916)

​

 

268,674

Collateralized mortgage obligations

​

 

651,042

​

 

61

​

 

(51,850)

​

 

599,253

Corporate debt securities (1)

​

 

67,927

​

 

—

​

 

(6,271)

​

 

61,656

States and political subdivisions

​

 

31,726

​

 

1

​

 

(4,011)

​

 

27,716

Totals

​

$

1,477,022

​

$

225

​

$

(104,334)

​

$

1,372,913

(1)Certain corporate debt securities associated with merchant bank investments are required to be accounted for under the provisions of the Fair Value Option. As a result, unrealized losses included fair value adjustments of $4.0 million and $4.1 million that were reported as a component of other noninterest income within the consolidated statements of operations during the three and nine months ended September 30, 2026, respectively. All other unrealized gains and losses are included as a component of accumulated other comprehensive income or loss on the Company’s consolidated balance sheets.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Available for Sale

​

​

Amortized

​

Unrealized

​

Unrealized

​

​

​

December 31, 2025

​

Cost

​

Gains

​

Losses

​

Fair Value

U.S. Treasury securities

​

$

4,998

​

$

—

​

$

(55)

​

$

4,943

U.S. government agencies:

​

​

​

​

​

​

​

​

​

​

​

​

Bonds

​

​

81,418

​

​

138

​

​

(349)

​

​

81,207

Residential mortgage-backed securities

​

 

411,571

​

 

1,553

​

 

(22,064)

​

 

391,060

Commercial mortgage-backed securities

​

​

243,888

​

 

830

​

 

(4,382)

​

 

240,336

Collateralized mortgage obligations

​

 

716,201

​

 

917

​

 

(36,593)

​

 

680,525

Corporate debt securities (1)

​

 

62,683

​

 

613

​

 

(1,304)

​

 

61,992

States and political subdivisions

​

 

33,337

​

 

39

​

 

(2,391)

​

 

30,985

Totals

​

$

1,554,096

​

$

4,090

​

$

(67,138)

​

$

1,491,048

(1)Certain corporate debt securities associated with merchant bank investments are required to be accounted for under the provisions of the Fair Value Option. As a result, unrealized losses included fair value adjustments of $0.4 million that was reported as a component of other noninterest income within the consolidated statements of operations during each of the three and nine months ended September 30, 2025. All other unrealized gains and losses are included as a component of accumulated other comprehensive income or loss on the Company’s consolidated balance sheets.
Summary of amortized cost and fair value of held to maturity securities

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Held to Maturity

​

​

Amortized

​

Unrealized

​

Unrealized

​

​

​

September 30, 2026

  ​ ​ ​

Cost

  ​ ​ ​

Gains

  ​ ​ ​

Losses

  ​ ​ ​

Fair Value

U.S. government agencies:

​

​

​

​

​

​

​

​

​

​

​

​

Residential mortgage-backed securities

​

$

280,923

​

$

—

​

$

(31,207)

​

$

249,716

Commercial mortgage-backed securities

​

​

103,233

​

 

—

​

 

(8,983)

​

 

94,250

Collateralized mortgage obligations

​

 

275,493

​

 

—

​

 

(35,856)

​

 

239,637

States and political subdivisions

​

 

80,586

​

 

—

​

 

(10,681)

​

 

69,905

Totals

​

$

740,235

​

$

—

​

$

(86,727)

​

$

653,508

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Held to Maturity

​

​

Amortized

​

Unrealized

​

Unrealized

​

​

​

December 31, 2025

  ​ ​ ​

Cost

  ​ ​ ​

Gains

  ​ ​ ​

Losses

  ​ ​ ​

Fair Value

U.S. government agencies:

​

​

​

​

​

​

​

​

​

​

​

​

Residential mortgage-backed securities

​

$

265,349

​

$

515

​

$

(18,308)

​

$

247,556

Commercial mortgage-backed securities

​

​

122,636

​

​

327

​

​

(6,088)

​

​

116,875

Collateralized mortgage obligations

​

 

262,203

​

 

223

​

 

(25,577)

​

 

236,849

States and political subdivisions

​

 

78,141

​

 

134

​

 

(4,665)

​

 

73,610

Totals

​

$

728,329

​

$

1,199

​

$

(54,638)

​

$

674,890

​

Schedule of information regarding available for sale securities that were in an unrealized loss position

Information regarding available for sale and held to maturity securities that were in an unrealized loss position is shown in the following tables (dollars in thousands).

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

September 30, 2026

​

December 31, 2025

​

  ​ ​ ​

Number of

  ​ ​ ​

​

​

  ​ ​ ​

Unrealized

  ​ ​ ​

Number of

  ​ ​ ​

​

​

  ​ ​ ​

Unrealized

​

​

Securities

​

Fair Value

​

Losses

​

Securities

​

Fair Value

​

Losses

Available for Sale

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

U.S. treasury securities:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

—

​

$

—

​

$

—

 

—

​

$

—

​

$

—

Unrealized loss for twelve months or longer

 

—

​

 

—

​

 

—

 

1

​

 

4,943

​

 

55

​

 

—

​

 

—

​

 

—

 

1

​

 

4,943

​

 

55

U.S. government agencies:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Bonds:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

2

​

​

29,779

​

​

221

 

2

​

​

2,811

​

​

6

Unrealized loss for twelve months or longer

 

14

​

 

35,450

​

 

213

 

13

​

 

41,004

​

 

343

​

 

16

​

​

65,229

​

​

434

 

15

​

 

43,815

​

 

349

Residential mortgage-backed securities:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

16

​

 

124,311

​

 

4,750

 

1

​

 

11,390

​

 

46

Unrealized loss for twelve months or longer

 

116

​

 

217,818

​

 

30,102

 

117

​

 

251,643

​

 

22,018

​

 

132

​

​

342,129

​

​

34,852

 

118

​

 

263,033

​

 

22,064

Commercial mortgage-backed securities:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

10

​

 

95,365

​

 

2,571

 

1

​

 

9,893

​

 

43

Unrealized loss for twelve months or longer

 

18

​

 

198,545

​

 

4,345

 

18

​

 

198,985

​

 

4,339

​

 

28

​

​

293,910

​

​

6,916

 

19

​

 

208,878

​

 

4,382

Collateralized mortgage obligations:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

15

​

 

106,941

​

 

4,740

 

3

​

 

21,597

​

 

54

Unrealized loss for twelve months or longer

 

123

​

 

484,231

​

 

47,110

 

128

​

 

550,788

​

 

36,539

​

 

138

​

​

591,172

​

​

51,850

 

131

​

 

572,385

​

 

36,593

Corporate debt securities (1):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

2

​

 

45,196

​

 

5,099

 

1

​

 

7,121

​

 

829

Unrealized loss for twelve months or longer

 

2

​

 

16,460

​

 

1,172

 

1

​

 

9,743

​

 

475

​

 

4

​

​

61,656

​

​

6,271

 

2

​

 

16,864

​

 

1,304

States and political subdivisions:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

12

​

 

5,252

​

 

97

 

—

​

 

—

​

 

—

Unrealized loss for twelve months or longer

 

37

​

 

20,649

​

 

3,914

 

40

​

 

22,742

​

 

2,391

​

 

49

​

​

25,901

​

​

4,011

 

40

​

 

22,742

​

 

2,391

Total available for sale:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

57

​

 

406,844

​

 

17,478

 

8

​

 

52,812

​

 

978

Unrealized loss for twelve months or longer

 

310

​

 

973,153

​

 

86,856

 

318

​

 

1,079,848

​

 

66,160

​

 

367

​

$

1,379,997

​

$

104,334

 

326

​

$

1,132,660

​

$

67,138

(1)Certain corporate debt securities associated with merchant bank investments are required to be accounted for under the provisions of the Fair Value Option. As a result, unrealized losses included fair value adjustments of $4.0 million and $0.4 million during the three months ended September 30, 2026 and 2025, respectively, and $4.1 million and $0.4 million during the nine months ended September 30, 2026 and 2025, that were reported as a component of other noninterest income within the consolidated statements of operations. All other unrealized losses are included as a component of accumulated other comprehensive income or loss on the Company’s consolidated balance sheets.
Schedule of information regarding held to maturity securities that were in an unrealized loss position

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

September 30, 2026

​

December 31, 2025

​

  ​ ​ ​

Number of

  ​ ​ ​

​

​

  ​ ​ ​

Unrealized

  ​ ​ ​

Number of

  ​ ​ ​

​

​

  ​ ​ ​

Unrealized

​

​

Securities

​

Fair Value

​

Losses

​

Securities

​

Fair Value

​

Losses

Held to Maturity

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

U.S. government agencies:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Residential mortgage-backed securities:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

6

​

$

52,087

​

$

2,725

 

1

​

$

11,337

​

$

2

Unrealized loss for twelve months or longer

 

46

​

 

197,629

​

 

28,482

 

45

​

 

214,351

​

 

18,306

​

 

52

​

 

249,716

​

 

31,207

 

46

​

 

225,688

​

 

18,308

Commercial mortgage-backed securities:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

3

​

 

20,087

​

 

621

 

—

​

 

—

​

 

—

Unrealized loss for twelve months or longer

 

13

​

 

74,163

​

 

8,362

 

20

​

 

102,228

​

 

6,088

​

 

16

​

 

94,250

​

 

8,983

 

20

​

 

102,228

​

 

6,088

Collateralized mortgage obligations:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

6

​

 

59,880

​

 

1,684

 

—

​

 

—

​

 

—

Unrealized loss for twelve months or longer

 

50

​

 

179,757

​

 

34,172

 

51

​

 

206,483

​

 

25,577

​

 

56

​

 

239,637

​

 

35,856

 

51

​

 

206,483

​

 

25,577

States and political subdivisions:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

19

​

​

15,657

​

​

1,127

 

1

​

​

500

​

​

—

Unrealized loss for twelve months or longer

 

161

​

 

54,248

​

 

9,554

 

165

​

 

60,563

​

 

4,665

​

 

180

​

 

69,905

​

 

10,681

 

166

​

 

61,063

​

 

4,665

Total held to maturity:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unrealized loss for less than twelve months

 

34

​

 

147,711

​

 

6,157

 

2

​

 

11,837

​

 

2

Unrealized loss for twelve months or longer

 

270

​

 

505,797

​

 

80,570

 

281

​

 

583,625

​

 

54,636

​

 

304

​

$

653,508

​

$

86,727

 

283

​

$

595,462

​

$

54,638

Schedule of amortized cost and fair value of securities, excluding trading and equity securities, by contractual maturity The amortized cost and fair value of securities, excluding trading and equity securities, at September 30, 2026 are shown by contractual maturity below (in thousands).

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Available for Sale

​

Held to Maturity

​

  ​ ​ ​

Amortized

  ​ ​ ​

​

​

  ​ ​ ​

Amortized

  ​ ​ ​

​

​

​

​

Cost

​

Fair Value

 

Cost

​

Fair Value

Due in one year or less

​

$

17,274

​

$

17,217

​

$

485

​

$

476

Due after one year through five years

​

 

92,212

​

 

85,526

​

 

12,979

​

 

11,919

Due after five years through ten years

​

 

35,047

​

 

32,400

​

 

60,762

​

 

51,886

Due after ten years

​

 

24,177

​

 

22,910

​

 

6,360

​

 

5,624

​

​

 

168,710

​

 

158,053

​

 

80,586

​

 

69,905

​

​

​

​

​

​

​

​

​

​

​

​

​

Residential mortgage-backed securities

​

 

381,682

​

 

346,933

​

 

280,923

​

 

249,716

Commercial mortgage-backed securities

​

 

275,588

​

 

268,674

​

 

103,233

​

 

94,250

Collateralized mortgage obligations

​

 

651,042

​

 

599,253

​

 

275,493

​

 

239,637

​

​

$

1,477,022

​

$

1,372,913

​

$

740,235

​

$

653,508