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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2025
Income Taxes  
Schedule of current and deferred portions of net income tax expense

2025

2024

2023

 

(Dollars in Thousands)

 

Current

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

U.S.

$

88,333

$

105,114

$

82,657

State

 

5,670

 

5,905

 

6,137

Total current taxes

 

94,003

 

111,019

 

88,794

Deferred

U.S.

 

13,421

 

(11,430)

 

23,001

State

 

645

 

(36)

 

(51)

Total deferred taxes

 

14,066

 

(11,466)

 

22,950

Total income taxes

$

108,069

$

99,553

$

111,744

Schedule of income tax expense differences from the amount computed by applying the U.S. Federal income tax rate to income before income taxes The reasons for the differences for the years ended December 31 are as follows (Dollars in Thousands):

2025

2024

2023

Dollars

Percent

Dollars

Percent

Dollars

Percent

U.S. federal income tax expense computed at the statutory rate

  ​ ​ ​

$

109,276

21.0

%

  ​ ​ ​

$

106,831

21.0

%

  ​ ​ ​

$

109,938

21.0

%

State income/franchise taxes, net of U.S. federal income tax effects (1)

4,989

1.0

4,636

0.9

4,808

0.9

Net investment in low income housing investments

 

(3,451)

(0.7)

 

(2,531)

(0.5)

 

1,974

0.4

Non-taxable or non-deductible items

 

(2,745)

(0.5)

 

(9,383)

(1.9)

 

(4,976)

(1.0)

Actual tax expense

$

108,069

20.8

%

$

99,553

19.5

%

$

111,744

21.4

%

(1) State income/franchise taxes, net of U.S. federal income tax effects are related to taxes paid in the States of Texas and Oklahoma

Schedule of tax effects of temporary difference that give rise to significant portions of the deferred tax assets and deferred tax liabilities

2025

2024

 

(Dollars in Thousands)

 

Deferred tax assets:

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

Loans receivable, principally due to the allowance for probable loan losses

$

41,405

$

40,883

Other real estate owned

 

1,770

 

1,443

Accrued expenses

 

273

 

539

Net unrealized losses on available for sale investment securities

68,506

105,339

Other

 

2,022

 

1,480

Total deferred tax assets

 

113,976

 

149,684

Deferred tax liabilities:

Bank premises and equipment, principally due to differences on depreciation

 

(13,477)

 

(14,648)

Impairment charges on available-for-sale securities

(19)

(19)

Identified intangible assets and goodwill

 

(14,151)

 

(14,151)

Partnership investment pass through

(70,529)

(55,117)

Other

 

(5,139)

 

(4,189)

Total deferred tax liabilities

 

(103,315)

 

(88,124)

Net deferred tax asset

$

10,661

$

61,560