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Defined Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2024
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
Schedule of Costs of Retirement Plans The components of net periodic pension cost (income) are as follows (dollars in thousands):
 Three months ended June 30,Six months ended June 30,
 2024202320242023
Service costs$130 $120 $260 $240 
Interest costs330 310 660 630 
Expected return on plan assets(510)(520)(1,020)(1,050)
Settlement and curtailment losses— 1,020 — 1,020 
Amortization of net loss40 40 90 70 
Net periodic benefit cost (income)$(10)$970 $(10)$910