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Note 4 - Property and Equipment, Net - Property and Equipment (Details) - USD ($)
$ in Thousands
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Property, plant and equipment, gross $ 250,946 $ 247,257  
Less accumulated depreciation 173,195 172,333  
Total, net 77,751 74,924 $ 67,741
Land [Member]      
Property, plant and equipment, gross 2,261 2,261  
Furniture and Fixtures [Member]      
Property, plant and equipment, gross 44,191 41,578  
Computer Equipment [Member]      
Property, plant and equipment, gross 27,122 26,960  
Building [Member]      
Property, plant and equipment, gross 14,970 14,970  
Leasehold Improvements [Member]      
Property, plant and equipment, gross 111,717 113,573  
Software and Software Development Costs [Member]      
Property, plant and equipment, gross 42,911 41,763  
Construction in Progress [Member]      
Property, plant and equipment, gross $ 7,774 $ 6,152