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Note 4 - Exit and Disposal Activities (Details Textual) - Transition of Production from the Broadway Plant [Member] - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Restructuring and Related Costs, Incurred Cost, Total $ 509,000 $ 1,394,000
Restructuring and Related Cost, Incurred Cost, Per Share $ 0.02 $ 0.07
Restructuring Charges, Total $ 509,000  
Restructuring and Related Cost, Expected Cost Remaining 63,000  
Sypris Electronics [Member]    
Restructuring and Related Cost, Expected Cost Remaining 63,000  
Equipment Relocation Costs [Member]    
Restructuring Charges, Total 38,000 $ 361,000
Restructuring and Related Cost, Expected Cost Remaining 0  
Other Restructuring [Member]    
Restructuring Charges, Total 471,000 $ 1,033,000
Restructuring and Related Cost, Expected Cost Remaining $ 63,000