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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Statement of Comprehensive Income [Abstract]      
Net unrealized loss, tax benefit (expense) $ (615) $ (378) $ 662
Reclassification of net realized gain, tax benefit (expense) 0 18 (171)
Pension and other postretirement benefits activity, tax benefit (expense) $ (7,078) $ (2,256) $ 1,371