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Note 9 - Long-Term Debt (Details) (USD $)
 12 Months Ended
Dec. 28, 2013
Note 9 - Long-Term Debt (Details) [Line Items]  
Line of Credit Facility, Maximum Borrowing Capacity $ 35,000,000
Pledge of Ownership Interest in Foreign Subsidiaries 65.00%
Line of Credit Facility, Amount Outstanding 0
Letters of Credit Outstanding, Amount 1,100,000
Line of Credit Facility, Remaining Borrowing Capacity $ 33,900,000
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member]
  
Note 9 - Long-Term Debt (Details) [Line Items]  
Debt Instrument, Basis Spread on Variable Rate 1.80%