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Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract] |  |  |  |
Amortization of net actuarial loss, gross amount | $ 41 | $ 688 | $ 60 | $ 1,683
Amortization of net actuarial loss, income tax provision | (11) | (174) | (17) | (424)
Amortization of net actuarial loss, net amount | 30 | 514 | 43 | 1,259
Actuarial gains, gross amount | 5,472 | 4,128 | 5,472 | 4,128
Actuarial gains, income tax provision | (1,371) | (1,035) | (1,371) | (1,035)
Actuarial gains, net amount | 4,101 | 3,093 | 4,101 | 3,093
Foreign currency translation, gross amount | (611) | (86) | (135) | (583)
Foreign currency translation, income tax provision | 0 | 0 | 0 | 0
Foreign currency translation, net amount | (611) | (86) | (135) | (583)
Total other comprehensive income, gross amount | 4,902 | 4,730 | 5,397 | 5,228
Total other comprehensive income, income tax provision | (1,382) | (1,209) | (1,388) | (1,459)
Total other comprehensive income, net of taxes | $ 3,520 | $ 3,521 | $ 4,009 | $ 3,769

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