Business and Summary of Significant Accounting Policies (Other Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Jan. 01, 2013	Jan. 03, 2012
Finite-Lived Intangible Assets [Line Items]
Debt issuance costs	$ 0.5	$ 1.0
Accumulated amortization of debt issuance costs	0.2	0.5
August 2012 Credit Facility Amendment [Member]
Finite-Lived Intangible Assets [Line Items]
Write off of deferred debt issuance cost	0.6	2.6	0.3
Accumulated amortization of debt issuance costs	$ 0.3	$ 0.8	$ 0.9