Note 8 - Debt (Detail) (USD $)	12 Months Ended		12 Months Ended			12 Months Ended
	Dec. 30, 2012 Revolving Line of Credit [Member]	Jan. 01, 2012 Revolving Line of Credit [Member]	Dec. 30, 2012 Securitization Facility [Member] Facility Fee [Member]	Dec. 30, 2012 Securitization Facility [Member] Standby Letter of Credit Related to Workers' Compensation [Member]	Jan. 01, 2012 Securitization Facility [Member] Standby Letter of Credit Related to Workers' Compensation [Member]	Dec. 31, 2012 Securitization Facility [Member]	Dec. 30, 2012 Securitization Facility [Member]	Jan. 01, 2012 Securitization Facility [Member]	Dec. 30, 2012 Unsecured, uncommitted short-term local credit facilities [Member]	Jan. 01, 2012 Unsecured, uncommitted short-term local credit facilities [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 150,000,000						$ 150,000,000		$ 12,900,000
Line of Credit Facility, Amount Outstanding	0	6,200,000					63,000,000	84,000,000	1,100,000	6,100,000
Line of Credit Facility, Remaining Borrowing Capacity	150,000,000	143,800,000					32,000,000	15,900,000
Line of Credit Facility, Interest Rate at Period End		2.90%					1.40%	1.43%	9.56%	13.40%
Line of Credit Facility, Commitment Fee Percentage (in Basis Points)	0.25%		0.60%
Duration of Debt Facility						3 years
Letters of Credit Outstanding, Amount				$ 55,000,000	$ 50,100,000
Debt Instrument, Basis Spread on Variable Rate (in Basis Points)							0.55%