Common Stock Repurchase Program (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Mar. 03, 2014	Feb. 27, 2013
Stock repurchase program authorized on March 3, 2014
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount			$ 20.0
Number of shares repurchased	1.9
Value of shares repurchased	13.1
Remaining amount under the approved program	6.9
Stock repurchase program authorized on February 27, 2013
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount				20.0
Number of shares repurchased		0.8
Value of shares repurchased		3.7
Remaining amount under the approved program		$ 16.3