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v3.23.3

Employee Benefit Plans - Net Pension Cost (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Components of net pension cost |  |  |  |
Service cost - benefits earned during the year | $ 237 | $ 373 | $ 710 | $ 1,118
Interest costs on projected benefit obligations | 357 | 293 | 1,071 | 881
Expected return on plan assets | (544) | (570) | (1,634) | (1,711)
Expected administrative expenses | 28 | 29 | 86 | 88
Amortization of unrecognized net loss | (160) | 0 | (480) | 0
Net periodic pension cost | $ (82) | $ 125 | $ (247) | $ 376

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