Note 7 - Debt (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	12 Months Ended
	Sep. 29, 2008	Jul. 02, 2011	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Jun. 12, 2011	Dec. 29, 2012 Unsecured Revolving Credit Facility [Member]	Jun. 13, 2011 Unsecured Revolving Credit Facility [Member]
Term Loan Facility, Term of Loan	5 years
Term Loan Facility, Maximum Borrowing Capacity	$ 80.0
Line of Credit Facility, Maximum Borrowing Capacity						75.0		150.0
Line of Credit Facility, Potential Maximum Borrowing Capacity						125.0		225.0
Line of Credit Facility, Remaining Borrowing Capacity							65.4
Debt Instrument, Basis Spread on Variable Rate							1.25%
Line of Credit Facility, Interest Rate at Period End							1.46%
Write off of Deferred Debt Issuance Cost		0.2
Unamortized Debt Issuance Expense		0.7
Line of Credit Facility, Amount Outstanding		47.0
Letters of Credit Outstanding, Amount			0.8
Letters of Credit, Available Borrowing Capacity			2.3
Interest Paid			$ 1.7	$ 1.6	$ 1.3