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Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 26, 2018	Sep. 27, 2017
Supplemental Cash Flow Information [Abstract]
Income taxes paid, net	$ 2,347	$ 5,039
Interest paid	14,349	10,547
Noncash investing and financing activities:
Property acquisition payable	0	500
Insurance proceeds receivable	19	0
Issuance of common stock, pursuant to share-based compensation plans	4,671	4,961
Execution of capital leases	2,850	4,959
Treasury stock payable	419	741
Notes received in connection with disposition of property	$ 0	$ 1,750

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The fair value of insurance proceeds receivable in noncash investing and financing activities.

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The increase during the period in capital lease obligations due to entering into new capital leases.

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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

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