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v3.21.2

Employee Retirement Plans | 6 Months Ended
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Jun. 30, 2021
Employee Retirement Plans |
Employee Retirement Plans | 8. Employee Retirement Plans The components of the Company’s pension expense were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020
​ | ​ | (Dollars in thousands) | ​ | ​ | ​ | ​ | ​ | ​
Service cost | ​ | $ | 102 | ​ | $ | 115 | ​ | $ | 204 | ​ | $ | 230
Interest cost | ​ |  | 371 | ​ |  | 506 | ​ |  | 742 | ​ |  | 1,006
Expected return on plan assets | ​ |  | (720) | ​ |  | (698) | ​ |  | (1,440) | ​ |  | (1,388)
Net amortization and deferral | ​ |  | 247 | ​ | ​ | 196 | ​ |  | 494 | ​ |  | 382
Pension expense | ​ | $ | — | ​ | $ | 119 | ​ | $ | — | ​ | $ | 230
​ The components of pension expense other than the service cost component were included in other income (expense), net in the Consolidated Condensed Statements of Earnings and Comprehensive Income (Unaudited).

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