v3.26.1
Employee benefit and stock plans (Tables)
6 Months Ended
Jun. 30, 2026
Employee benefit and stock plans  
Schedule of components of net periodic pension benefit

Three Months Ended June 30, 

Pension Benefits

(Dollars in thousands)

2026

2025

Net periodic pension benefit:

  ​ ​ ​

  ​ ​ ​

Interest cost

$

158

$

165

Expected return on plan assets

 

(242)

 

(337)

Amortization of unrecognized net loss

 

2

 

35

Net periodic pension benefit

$

(82)

$

(137)

Six Months Ended June 30, 

Pension Benefits

(Dollars in thousands)

2026

2025

Net periodic pension benefit:

  ​ ​ ​

  ​ ​ ​

Interest cost

$

316

$

330

Expected return on plan assets

 

(484)

 

(674)

Amortization of unrecognized net loss

 

4

 

70

Net periodic pension benefit:

$

(164)

$

(274)