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Note 5 - Exit and Disposal Activities (Details Textual) - Transition of Production from the Broadway Plant [Member] - USD ($)	3 Months Ended		6 Months Ended	12 Months Ended
	Jul. 02, 2017	Dec. 31, 2016	Jul. 02, 2017	Dec. 31, 2016
Restructuring and Related Cost, Incurred Cost, Per Share	$ 0.04		$ 0.09	$ 0.03
Restructuring and Related Cost, Incurred Cost	$ 880,000		$ 1,878,000	$ 645,000
Impairment of Long-Lived Assets to be Disposed of		$ 188,000
Restructuring and Related Cost, Expected Cost Remaining	2,379,000		2,379,000
Sypris Electronics [Member]
Restructuring and Related Cost, Expected Cost Remaining	2,379,000		2,379,000
Employee Severance [Member]
Restructuring and Related Cost, Incurred Cost			1,005,000	$ 427,000
Restructuring and Related Cost, Expected Cost Remaining	$ 0		$ 0

X

- Definition

Amount of costs incurred to date for the specified restructuring cost per share of common stock or common unit outstanding during the reporting period.

+ References

No definition available.

+ Details

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X

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2611-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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X

- Definition

Amount of expected cost remaining for the specified restructuring cost.

+ References

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- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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