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Note 13 - Commitments and Contingencies (Details) (USD $)	3 Months Ended		12 Months Ended
	Apr. 05, 2015	Mar. 30, 2014	Dec. 31, 2014
Note 13 - Commitments and Contingencies (Details) [Line Items]
Product Warranty Accrual	$ 811,000us-gaap_ProductWarrantyAccrual		$ 825,000us-gaap_ProductWarrantyAccrual
Product Warranty Expense	64,000us-gaap_ProductWarrantyExpense	67,000us-gaap_ProductWarrantyExpense
Extended Product Warranty Accrual, Warranties Issued	749,000us-gaap_ExtendedProductWarrantyAccrualWarrantiesIssued		839,000us-gaap_ExtendedProductWarrantyAccrualWarrantiesIssued
Accrual for Environmental Loss Contingencies	0us-gaap_AccrualForEnvironmentalLossContingencies		0us-gaap_AccrualForEnvironmentalLossContingencies
Purchase Obligation	5,542,000us-gaap_PurchaseObligation
Letters of Credit Outstanding, Amount	$ 755,000us-gaap_LettersOfCreditOutstandingAmount
Link Encryption Products [Member] | Minimum [Member]
Note 13 - Commitments and Contingencies (Details) [Line Items]
Extended Product Warranty, Term	3 years
Link Encryption Products [Member] | Maximum [Member]
Note 13 - Commitments and Contingencies (Details) [Line Items]
Extended Product Warranty, Term	5 years

X

- Definition

Represents contractual term of extended product warranty.

+ References

No definition available.

+ Details

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Namespace Prefix:	sypr_
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- Details

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X

- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 30

-Section 50

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 25

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346

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X

- Definition

Represents the aggregate increase in the liability for accruals related to extended product warranties issued during the reporting period. Does not include any increase in the liability for accruals related to standard product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249

+ Details

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Balance Type:	credit
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X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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X

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(5))

-URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(3,4))

-URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249

+ Details

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X

- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

+ Details

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X

- Details

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