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Note 5 - Milestone Revenue Recognition (Details) (USD $) | 3 Months Ended
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Apr. 05, 2015 | Mar. 30, 2014
Milestone Revenue Recognition [Abstract] |  |
Revenue Recognition, Milestone Method, Revenue Recognized | $ 300,000 us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized | $ 1,275,000 us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized

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- Details
Name: | sypr_MilestoneRevenueRecognitionAbstract
Namespace Prefix: | sypr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of consideration recognized during the period for the milestone or milestones. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 28 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=51671726&loc=SL6892177-166501 + Details
Name: | us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration