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Note 17 - Earnings Per Share (Details) (Equity Option [Member])
12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Equity Option [Member]
     
Note 17 - Earnings Per Share (Details) [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 43,693us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember
96,401us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember
159,983us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember