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Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 28, 2017
Jun. 29, 2016
Supplemental Cash Flow Information [Abstract]    
Income taxes paid, net $ 2,668 $ 938
Interest paid 6,718 5,215
Noncash investing and financing activities:    
Property acquisition payable 0 2,973
Issuance of common stock, pursuant to share-based compensation plans 4,961 3,597
Execution of capital leases 4,225 4,623
Treasury stock payable 1,394 147
Notes received in connection with disposition of property $ 1,750 $ 0