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Note 9 - Line of Credit (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Feb. 20, 2009
Note 9 - Line of Credit (Details) [Line Items]      
Letters of Credit Outstanding, Amount $ 0.8us-gaap_LettersOfCreditOutstandingAmount $ 0.8us-gaap_LettersOfCreditOutstandingAmount  
Revolving Credit Facility [Member]      
Note 9 - Line of Credit (Details) [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity     35us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Line of Credit Facility, Expiration Date Dec. 11, 2019    
Long-term Line of Credit 20.0us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
0us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
 
Line of Credit Facility, Remaining Borrowing Capacity 14.2us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
   
Letter of Credit [Member]      
Note 9 - Line of Credit (Details) [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity     $ 5us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_LetterOfCreditMember