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Note 7 - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($)
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Tax Reserve [Member]    
Balance $ 719,000 $ 560,000
Addition to reserve 200,000
Audit settlement release (29,000)
Lapse of statute (12,000)
Balance $ 719,000 719,000
Audit settlement release 29,000
Lapse of statute 12,000
Balance $ 1,000,000  
Balance $ 1,100,000 $ 1,000,000