Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Derivative [Line Items]
Unrealized loss on interest rate derivatives included in accumulated other comprehensive income	$ 0.1
Foreign Exchange Contracts [Member]
Derivative [Line Items]
Notional amount of interest rate swap	15.0
Term of derivative contracts, years	3 years
Fair value of interest rate derivatives	(0.1)	(0.2)
Interest Rate Swaps [Member]
Derivative [Line Items]
Interest rate on portion of the Company's line of credit	1.20%
Selling, General And Administrative Expenses [Member]
Derivative [Line Items]
Foreign currency exchange gains (losses)	$ 0.3	$ (1.7)	$ (1.2)