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Note 13 - Debt (Details Textual)
Mar. 09, 2016
USD ($)
a
Mar. 09, 2016
MXN
a
Jul. 02, 2017
USD ($)
Dec. 31, 2016
USD ($)
Aug. 31, 2016
USD ($)
Toluca [Member]          
Sale Leaseback Transaction, Amount Due under Financing Arrangement | $     $ 3,066,000    
Toluca [Member] | Sypris Technologies Mexico, S. de R.L. de C.V. [Member]          
Area of Land | a 24 24      
Sale Leaseback Transaction, Net Proceeds, Investing Activities $ 12,182,000 MXN 215,000,000      
Sale Leaseback Transaction, Term of Lease 10 years 10 years      
Sale Leaseback Transaction, Portion of Real Estate Property Leased Back to Seller | a 9 9      
Promissory Note [Member] | Gill Family Capital Management [Member]          
Subordinated Debt | $     $ 6,500,000 $ 6,500,000 $ 6,500,000
Debt Instrument, Interest Rate, Stated Percentage     8.00%