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Note 2 - Strategic Actions (Details Textual)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) ft²	Aug. 31, 2016 USD ($)
Leased Facility in Tampa, Florida [Member] | Sypris Electronics [Member]
Area of Real Estate Property		50,000
Previously Leased Facility in Tampa, Florida [Member] | Sypris Electronics [Member]
Area of Real Estate Property		300,000
Gill Family Capital Management [Member] | Promissory Note [Member]
Subordinated Debt | $	$ 6,500,000	$ 6,500,000	$ 6,500,000

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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