XML 17 R6.htm IDEA: XBRL DOCUMENT v3.20.2
Unaudited Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Statement of Comprehensive Income [Abstract]        
Reclassification of pension and postretirement adjustments into earnings, tax expense (benefit) $ (28) $ (21) $ (73) $ (45)