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Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 24, 2020
Supplemental Cash Flow Information [Abstract]    
Income taxes paid, net $ 1,942 $ 277
Interest paid 8,478 8,057
Noncash investing and financing activities:    
Issuance of common stock, pursuant to share-based compensation plans 3,087 5,808
Execution of finance leases $ 464 $ 11