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Note 3 - Prepaid Expenses and Other Assets (Details) - Prepaid Expenses and Other Current Assets (USD $)
In Thousands, unless otherwise specified
Jan. 03, 2015
Dec. 28, 2013
Prepaid Expenses and Other Current Assets [Abstract]    
Prepaid rent $ 7,848us-gaap_PrepaidRent $ 4,608us-gaap_PrepaidRent
Short-term investments 1,121us-gaap_ShortTermInvestments  
Other 6,642us-gaap_OtherAssetsCurrent 6,939us-gaap_OtherAssetsCurrent
$ 15,611us-gaap_PrepaidExpenseAndOtherAssetsCurrent $ 11,547us-gaap_PrepaidExpenseAndOtherAssetsCurrent