Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 24, 2014	Sep. 25, 2013
Supplemental Cash Flow Information [Abstract]
Income taxes paid, net	$ 3,070	$ 1,831
Interest paid	6,145	7,121
Noncash investing and financing activities:
Issuance of common stock, pursuant to share-based compensation plans	1,030	1,590
Execution of capital leases	2,489	4,038
Treasury stock payable	$ 108	$ 186