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Consolidated Statements Of Shareholders' Equity (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]        
Foreign currency translation adjustment, tax (benefit) $ (294) $ (19) $ (103) $ (1,125)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax (174) 618 185 (269)
Amortization of prior service costs and net gains or losses, tax $ 927 $ 836 $ 2,773 $ 2,507
Cash dividends declared, per share $ 0.12 $ 0.12 $ 0.36 $ 0.36