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Note 5 - Toluca Sale-leaseback (Details Textual) - Toluca [Member]			9 Months Ended	12 Months Ended
	Mar. 09, 2016 USD ($) a	Mar. 09, 2016 MXN ($)	Oct. 01, 2017	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Sale Leaseback Transaction, Transaction Related Expenses	$ 1,116,000
Sale Leaseback Transaction, Amount Due under Financing Arrangement				$ 2,949,000
Sale Leaseback Transaction, Deferred Gain, Net				4,075,000
Capital Lease Agreement Term			10 years
Sale Leaseback Transaction, Annual Rental Payments				$ 936,000
Other Income [Member]
Sale Leaseback Transaction, Current Period Gain Recognized					$ 2,370,000
Property, Plant and Equipment [Member]
Sale Leaseback Transaction, Amount Due under Financing Arrangement	$ 3,315,000
Sypris Technologies Mexico, S. de R.L. de C.V. [Member]
Area of Real Estate Property | a	24
Sale Leaseback Transaction, Net Proceeds, Investing Activities	$ 12,182,000	$ 215,000,000
Sale Leaseback Transaction, Portion of Real Estate Property Leased Back to Seller | a	9

X

- Definition

The term of the capital lease agreement.

+ References

No definition available.

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- Definition

Represents the area of the portion of the real estate property leased back to the seller in a sale leaseback transaction.

+ References

No definition available.

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- Definition

Represents the amount of expenses, not separately disclosed, associated with a sale leaseback transaction.

+ References

No definition available.

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- Definition

Area of a real estate property.

+ References

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- Definition

The liability due as of the balance sheet date for leasebacks accounted for using the deposit method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77913982&loc=d3e50796-112755

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84164451&loc=d3e36991-112694

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- Definition

The yearly payments due under the lease entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84164451&loc=d3e36991-112694

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77913982&loc=d3e50796-112755

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- Definition

The portion of the deferred gain that was recognized in the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 35
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77907795&loc=d3e50609-112754

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- Definition

The portion of the gain that will be recorded as income or a reduction in rent expense in future periods less amounts recognized in the current period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 35
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77907795&loc=d3e50609-112754

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- Definition

Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51843-112757

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 40
-Section 55
-Paragraph 51
-URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51840-112757

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