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Note 4 - Management's Plans (Details Textual) - USD ($)
3 Months Ended
Aug. 16, 2016
Apr. 03, 2016
Oct. 02, 2016
Feb. 26, 2016
Dec. 31, 2015
Gill Family Capital Management [Member] | Promissory Note [Member]          
Subordinated Debt     $ 6,500,000 $ 6,500,000 $ 5,500,000
Sypris Electronics [Member]          
Proceeds from Sale of Productive Assets $ 42,000,000        
Toluca [Member]          
Sale Leaseback Transaction, Net Proceeds, Investing Activities   $ 12,182,000