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Note 11 - Rent Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 29, 2015
Space Leases [Member]    
Rent expense    
Operating Leases, Rent Expense $ 10,137
Related Party Leases [Member]    
Rent expense    
Operating Leases, Rent Expense 702
Other Operating Leases [Member]    
Rent expense    
Operating Leases, Rent Expense 2,727 $ 112
Operating Leases, Rent Expense $ 13,566 $ 112