v3.26.1
INVESTMENT SECURITIES (Tables)
6 Months Ended
Jun. 30, 2026
INVESTMENT SECURITIES  
Schedule of amortized cost and fair value of investment securities available for sale

  ​ ​ ​

  ​ ​ ​

Gross

  ​ ​ ​

Gross

  ​ ​ ​

Amortized

Unrealized

Unrealized

Estimated

Cost

Gains

Losses

Fair Value

June 30, 2026

U.S. government and agency securities

$

1,071,037

$

$

(64,955)

$

1,006,082

Obligations of states and political subdivisions

 

2,878,309

 

5,254

 

(75,582)

 

2,807,981

Mortgage-backed securities

 

4,845,209

 

6,538

 

(297,885)

 

4,553,862

Total investment securities available for sale

$

8,794,555

$

11,792

$

(438,422)

$

8,367,925

December 31, 2025

U.S. government and agency securities

$

1,089,563

$

$

(56,630)

$

1,032,933

Obligations of states and political subdivisions

 

2,889,318

 

7,002

 

(77,788)

 

2,818,532

Mortgage-backed securities

 

5,116,307

 

12,394

 

(293,491)

 

4,835,210

Total investment securities available for sale

$

9,095,188

$

19,396

$

(427,909)

$

8,686,675

Schedule of debt securities available for sale in a continuous unrealized loss position

Less Than 12 Months

12 Months or More

Total

Unrealized

Unrealized

Unrealized

  ​ ​ ​

Fair Value

  ​ ​ ​

Losses

  ​ ​ ​

Fair Value

  ​ ​ ​

Losses

  ​ ​ ​

Fair Value

  ​ ​ ​

Losses

June 30, 2026

U.S. government and agency securities

$

$

$

1,006,082

$

(64,955)

$

1,006,082

$

(64,955)

Obligations of states and political subdivisions

 

 

 

1,861,875

 

(75,582)

 

1,861,875

 

(75,582)

Mortgage-backed securities

 

883,911

 

(6,544)

 

3,472,678

 

(291,341)

 

4,356,589

 

(297,885)

Totals

$

883,911

$

(6,544)

$

6,340,635

$

(431,878)

$

7,224,546

$

(438,422)

December 31, 2025

U.S. government and agency securities

$

$

$

1,032,933

$

(56,630)

$

1,032,933

$

(56,630)

Obligations of states and political subdivisions

 

 

 

1,868,907

 

(77,788)

 

1,868,907

 

(77,788)

Mortgage-backed securities

 

 

 

3,663,436

 

(293,491)

 

3,663,436

 

(293,491)

Totals

$

$

$

6,565,276

$

(427,909)

$

6,565,276

$

(427,909)

Schedule of number of securities and aggregated depreciation on investment securities available for sale in a continuous unrealized loss position

June 30, 2026

December 31, 2025

Number of

Aggregate

 

Number of

Aggregate

 

  ​ ​ ​

Securities

  ​ ​ ​

Depreciation

 

Securities

  ​ ​ ​

Depreciation

 

U.S. government and agency securities

 

2

 

6.06

%

2

5.20

%

Obligations of states and political subdivisions

 

6

 

3.90

%

7

4.00

%

Mortgage-backed securities

 

16

 

6.40

%

13

7.42

%

Schedule of amortized cost and fair value of investment securities held to maturity

Gross

Gross

Unrealized

Unrealized

Allowance for

Estimated

  ​ ​ ​

Amortized Cost

  ​ ​ ​

Gains

  ​ ​ ​

Losses

  ​ ​ ​

Credit Losses

  ​ ​ ​

Fair Value

June 30, 2026

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

U.S. government and agency securities

$

68,808

$

$

(3,299)

$

$

65,509

Obligations of states and political subdivisions

 

755,313

 

 

(37,134)

 

 

718,179

Mortgage-backed securities

 

592,067

 

8,017

 

(6,401)

 

 

593,683

Total investment securities held to maturity

$

1,416,188

$

8,017

$

(46,834)

$

$

1,377,371

December 31, 2025

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

U.S. government and agency securities

$

78,809

$

$

(2,309)

$

$

76,500

Obligations of states and political subdivisions

 

755,336

 

 

(32,339)

 

 

722,997

Mortgage-backed securities

 

681,662

 

9,771

 

(2,112)

 

 

689,321

Total investment securities held to maturity

$

1,515,807

$

9,771

$

(36,760)

$

$

1,488,818

Schedule of credit ratings for investment securities held to maturity

  ​ ​ ​

AAA

  ​ ​ ​

AA

  ​ ​ ​

A

  ​ ​ ​

BBB

  ​ ​ ​

Not Rated

  ​ ​ ​

Total

June 30, 2026

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

Obligations of states and political subdivisions

 

$

$

550,000

$

205,313

$

$

$

755,313

December 31, 2025

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

Obligations of states and political subdivisions

$

$

550,000

$

205,336

$

$

$

755,336

Schedule of contractual maturity of debt securities

Available for Sale

Held to Maturity

  ​ ​ ​

Amortized

  ​ ​ ​

Estimated

  ​ ​ ​

Net Carrying

  ​ ​ ​

Estimated

Cost

Fair Value

Amount

Fair Value

Due in one year or less

$

931,227

$

929,448

$

$

Due after one year through five years

 

1,835,497

 

1,762,804

 

 

Due after five years through ten years

 

149,118

 

147,926

 

820,269

 

779,841

Due after ten years

 

1,033,504

 

973,885

 

3,852

 

3,847

Subtotal

 

3,949,346

 

3,814,063

 

824,121

 

783,688

Mortgage-backed securities

 

4,845,209

 

4,553,862

 

592,067

 

593,683

Total

$

8,794,555

$

8,367,925

$

1,416,188

$

1,377,371