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Note 6 - Other Income, Net (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component $ 584,000 $ 398,000
Gain on Business Interruption Insurance Recovery 2,275,000 0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property (249,000) 2,668,000
Foreign Currency Transaction Gain (Loss), before Tax, Total 21,000 773,000
Other Nonoperating Income (Expense), Total $ 1,436,000 1,515,000
Sypris Technologies [Member]    
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property   $ 2,668,000