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Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2015
Sep. 24, 2014
Supplemental Cash Flow Information [Abstract]    
Income taxes paid, net $ 4,916 $ 3,070
Interest paid 6,102 6,145
Noncash investing and financing activities:    
Property acquisition payable 615 0
Issuance of common stock, pursuant to share-based compensation plans 4,551 1,030
Execution of capital leases 3,635 2,489
Treasury stock payable $ 1,785 $ 108