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Other-net (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 25, 2020
Sep. 27, 2019
Sep. 25, 2020
Sep. 27, 2019
Other Income and Expenses [Abstract]        
Metal consignment fees $ 2,317 $ 1,936 $ 6,583 $ 7,252
Amortization of Intangible Assets 907 375 1,201 1,133
Foreign currency (gain) loss (1,029) 469 (3,577) 853
Net loss on disposal of fixed assets 19 1 74 143
Other items 7 161 (138) 573
Total $ 2,221 $ 2,942 $ 4,143 $ 9,954