Note 1 - Summary of Significant Accounting Policies (Details) - Warehouse, Transportation, Purchasing, Advertising, and Occupancy Costs (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Note 1 - Summary of Significant Accounting Policies (Details) - Warehouse, Transportation, Purchasing, Advertising, and Occupancy Costs [Line Items]
Cost of sales	$ 68,761	$ 66,772	$ 138,767	$ 133,218
Warehouse and Transportation [Member]
Note 1 - Summary of Significant Accounting Policies (Details) - Warehouse, Transportation, Purchasing, Advertising, and Occupancy Costs [Line Items]
Cost of sales	1,866	1,708	3,696	3,452
Purchasing [Member]
Note 1 - Summary of Significant Accounting Policies (Details) - Warehouse, Transportation, Purchasing, Advertising, and Occupancy Costs [Line Items]
Cost of sales	741	692	1,457	1,388
Advertising [Member]
Note 1 - Summary of Significant Accounting Policies (Details) - Warehouse, Transportation, Purchasing, Advertising, and Occupancy Costs [Line Items]
Cost of sales	340	548	763	986
Occupancy [Member]
Note 1 - Summary of Significant Accounting Policies (Details) - Warehouse, Transportation, Purchasing, Advertising, and Occupancy Costs [Line Items]
Cost of sales	5,600	5,418	10,991	10,601
Warehouse, Transportation, Purchasing, Advertising, and Occupancy [Member]
Note 1 - Summary of Significant Accounting Policies (Details) - Warehouse, Transportation, Purchasing, Advertising, and Occupancy Costs [Line Items]
Cost of sales	$ 8,547	$ 8,366	$ 16,907	$ 16,427