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Note 3 - Exit and Disposal Activities (Details Textual) - Transition of Production from the Broadway Plant [Member]
12 Months Ended
Dec. 31, 2016
USD ($)
$ / shares
Restructuring and Related Cost, Incurred Cost $ 645,000
Restructuring and Related Cost, Incurred Cost, Per Share | $ / shares $ 0.03
Restructuring and Related Cost, Expected Cost Remaining $ 3,869,000
Impairment of Long-Lived Assets to be Disposed of 188,000
Sypris Electronics [Member]  
Restructuring and Related Cost, Expected Cost Remaining 3,869,000
Employee Severance [Member]  
Restructuring and Related Cost, Incurred Cost 427,000
Restructuring and Related Cost, Expected Cost Remaining $ 838,000