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Consolidated Statements Of Changes in Shareholders' Equity (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 26, 2020
Jun. 27, 2020
Sep. 28, 2019
Jun. 29, 2019
Sep. 26, 2020
Sep. 28, 2019
Consolidated Statements Of Changes In Shareholders' Equity [Abstract]            
Common stock cash dividends per share $ 0.22 $ 0.22 $ 0.22 $ 0.22    
Pension liability adjustment - pre-tax $ 226   $ 118   $ 453 $ 235