Common Stock Repurchase Program (Details) (USD $) Share data in Millions, unless otherwise specified	0 Months Ended	12 Months Ended	0 Months Ended	3 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended
	Feb. 27, 2013 Stock repurchase program authorized on February 27, 2013	Dec. 28, 2013 Stock repurchase program authorized on February 27, 2013	Feb. 24, 2012 Stock repurchase program authorized on February 24, 2012	Mar. 30, 2013 Stock repurchase program authorized on February 24, 2012	Dec. 29, 2012 Stock repurchase program authorized on February 24, 2012	Oct. 21, 2010 Share repurchase program authorized on October 21, 2010	Dec. 31, 2011 Share repurchase program authorized on October 21, 2010	Feb. 14, 2014 Subsequent Event [Member] Stock repurchase program authorized on February 24, 2012
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount	$ 20,000,000		$ 20,000,000			$ 20,000,000		$ 20,000,000
Period in force			12 months			12 months
Number of shares repurchased		0.8		0.6	4.1		2.4
Value of shares repurchased		3,700,000			17,500,000		14,400,000
Remaining amount under the approved program		$ 16,300,000		$ 2,500,000	$ 2,500,000