Employee Benefits - Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
---|---|---|
Pension Benefits | ||
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax | ||
Net Actuarial Gains (Losses) | $ (43,101) | $ (41,404) |
Net Prior Service Credit | 0 | 0 |
Total Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax | (43,101) | (41,404) |
Postretirement Benefits | ||
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax | ||
Net Actuarial Gains (Losses) | (1,613) | 1,003 |
Net Prior Service Credit | 1,464 | 1,645 |
Total Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax | $ (149) | $ 2,648 |