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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 29, 2019
Mar. 30, 2018
Mar. 29, 2019
Mar. 30, 2018
Statement of Comprehensive Income [Abstract]        
Pension plans, unrecognized gain, tax $ 22 $ 31 $ 44 $ 62
Change in pension plans, tax $ 11 $ 13 $ 22 $ 26