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Employee Retirement Plans | 6 Months Ended
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Jun. 30, 2024
Employee Retirement Plans |
Employee Retirement Plans | 7. Employee Retirement Plans The components of our pension expense were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Three Months Ended June 30, | ​ | ​ | Six Months Ended June 30,
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023
​ | ​ | (Dollars in thousands)
Service cost | ​ | $ | 97 | ​ | $ | 116 | ​ | $ | 193 | ​ | $ | 234
Interest cost | ​ |  | 637 | ​ |  | 644 | ​ |  | 1,274 | ​ |  | 1,316
Expected return on plan assets | ​ |  | (612) | ​ |  | (574) | ​ |  | (1,224) | ​ |  | (1,151)
Net amortization and deferral | ​ |  | 99 | ​ |  | 114 | ​ |  | 198 | ​ |  | 248
Pension expense | ​ | $ | 221 | ​ | $ | 300 | ​ | $ | 441 | ​ | $ | 647
​ The components of pension expense other than the service cost component were included in “other expense, net” in the Consolidated Condensed Statements of Earnings and Comprehensive Income (Unaudited).

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