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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Statement of Comprehensive Income [Abstract]        
Amortization of actuarial loss, tax $ 2 $ 6 $ 6 $ 16
Effect of settlements, tax effect $ 0 $ 0 $ 0 $ 32