Note 9 - Leases (Details) - Summary of Rent Expense (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Summary of Rent Expense [Abstract]      
Minimum rentals $ 17,647 $ 16,424 $ 16,732
Contingent rentals 2,558 2,456 2,335
$ 20,205 $ 18,880 $ 19,067