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Comprehensive Income (Loss) - Additional information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Comprehensive Income (Loss)        
Other Comprehensive Income (Loss), Defined Benefit Plan, after Reclassification Adjustment, Tax $ 49 $ 40 $ 149 $ 122