Quarterly Information (Quarterly Comparison of Financial Statements as Previously Filed - Parenthetical Information) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 23, 2012	Jun. 24, 2012	Mar. 25, 2012	Jun. 30, 2013	Jun. 24, 2012	Sep. 29, 2013	Sep. 23, 2012	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Balance Sheet Related Disclosures [Abstract]
Allowance for doubtful accounts receivable	$ 12,684	$ 13,512	$ 12,366	$ 15,107	$ 15,246	$ 13,983	$ 13,512	$ 15,246	$ 12,684	$ 15,107	$ 12,404	$ 13,242
Preferred stock, no par value	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Preferred stock, shares authorized	500,000	500,000	500,000	500,000	500,000	500,000	500,000	500,000	500,000	500,000	500,000	500,000
Preferred stock, shares issued	0	0	0	0	0	0	0	0	0	0	0	0
Common stock, par value	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.1	$ 0.1
Common stock, shares authorized	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000
Common stock, shares issued	45,389,813	45,202,617	44,944,529	44,600,006	44,504,789	44,434,255	45,202,617	44,504,789	45,389,813	44,600,006	45,484,524	44,763,404
Treasury stock, shares	4,035,912	4,035,912	4,035,912	4,035,912	4,035,912	4,035,912	4,035,912	4,035,912	4,035,912	4,035,912	4,035,912	4,035,912
Income Statement [Abstract]
Discontinued operations, tax expense (benefit)	0	(66)	134	117	77	80	68	(3)	68	114	(68)	247	(378)
Statement of Other Comprehensive Income [Abstract]
Amortization of pension plan actuarial losses, tax	122	221	108	0	0	0					449	65	63
Change in realized and unrealized (losses) gains on derivative hedges, tax	$ 139	$ 0	$ 0	$ 42	$ 55	$ 13					$ 139	$ (71)	$ 31