Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 30, 2014	Dec. 29, 2013
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 12,933	$ 12,404
Preferred Stock, No Par Value	$ 0	$ 0
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	45,644,492	45,484,524
Treasury stock, shares	4,035,912	4,035,912