v3.26.1
Employee Retirement Plans (Tables)
6 Months Ended
Jun. 30, 2026
Employee Retirement Plans  
Schedule of company's pension expense

Three Months Ended June 30, 

Six Months Ended June 30, 

  ​ ​ ​

2026

  ​ ​ ​

2025

  ​ ​ ​

2026

  ​ ​ ​

2025

(Dollars in thousands)

Service cost

$

48

$

59

$

96

$

117

Interest cost

 

567

 

634

 

1,134

 

1,269

Expected return on plan assets

 

(653)

 

(628)

 

(1,306)

 

(1,256)

Net amortization and deferral

 

20

 

55

 

40

 

110

Pension (benefit) expense

$

(18)

$

120

$

(36)

$

240