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Note 7 - Intangibles (Details Textual) (USD $)
12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 29, 2012
Dec. 09, 2011
Goodwill and Intangible Assets Disclosure [Abstract]        
Finite-Lived Intangible Assets, Accumulated Amortization $ 2,845,250us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization $ 2,518,662us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization    
Finite-Lived Intangible Assets, Net 2,860,260us-gaap_FiniteLivedIntangibleAssetsNet 3,430,349us-gaap_FiniteLivedIntangibleAssetsNet    
Amortization of Intangible Assets 394,169us-gaap_AmortizationOfIntangibleAssets 479,247us-gaap_AmortizationOfIntangibleAssets 422,670us-gaap_AmortizationOfIntangibleAssets  
Patents and Trademarks [Member]        
Goodwill and Intangible Assets Disclosure [Abstract]        
Finite-Lived Intangible Assets, Net 314,332us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= span_PatentsAndTrademarksMember
326,465us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= span_PatentsAndTrademarksMember
   
M.C. Healthcare Products "MCHP" [Member]        
Goodwill and Intangible Assets Disclosure [Abstract]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles       3,980,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
M.C. Healthcare Products "MCHP" [Member] | M C H P Acquisition Trade Names Non Compete Agreements And Customer Relationships [Member]        
Goodwill and Intangible Assets Disclosure [Abstract]        
Finite-Lived Intangible Assets, Accumulated Amortization 1,005,865us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= span_MCHPAcquisitionTradeNamesNonCompeteAgreementsAndCustomerRelationshipsMember
741,480us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= span_MCHPAcquisitionTradeNamesNonCompeteAgreementsAndCustomerRelationshipsMember
   
Finite-Lived Intangible Assets, Net $ 2,545,928us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= span_MCHPAcquisitionTradeNamesNonCompeteAgreementsAndCustomerRelationshipsMember
$ 3,103,884us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= span_MCHPAcquisitionTradeNamesNonCompeteAgreementsAndCustomerRelationshipsMember