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Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Pension and postretirement benefits [Abstract] |  |  |  |  |
Amortization of net actuarial loss, Gross Amount | [1] | $ 304 | $ (87) | $ 414 | $ 463
Amortization of net actuarial loss, Income Tax (Provision) Benefit | [1] | (77) | 21 | (105) | (118)
Amortization of net actuarial loss, Net Amount | [1] | 227 | (66) | 309 | 345
Actuarial gains (losses), Gross Amount | [1] | (3,609) | 8,167 | (3,609) | 8,167
Actuarial gains (losses), Income Tax (Provision) Benefit | [1] | 905 | (2,044) | 905 | (2,044)
Actuarial gains (losses), Net Amount | [1] | (2,704) | 6,123 | (2,704) | 6,123
Foreign currency translation, Gross Amount |  | 351 | (53) | (923) | 76
Foreign currency translation, Income Tax (Provision) Benefit |  | 0 | 0 | 0 | 0
Foreign currency translation, Net Amount |  | 351 | (53) | (923) | 76
Total other comprehensive income, Gross Amount |  | (2,954) | 8,027 | (4,118) | 8,706
Total other comprehensive income, Income Tax (Provision) Benefit |  | 828 | (2,023) | 800 | (2,162)
Total other comprehensive income (loss), net of taxes |  | $ (2,126) | $ 6,004 | $ (3,318) | $ 6,544
[1] | Actuarial gains (losses) are amortized into other income. (See Note 13, Retirement Plans)

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