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Note 2 - Net Revenues and Operating Income of M.C.Healthcare (Details) (M.C. Healthcare Products "MCHP" [Member], USD $)
12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 29, 2012
M.C. Healthcare Products "MCHP" [Member]
     
Net revenues $ 9,721,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
$ 11,305,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
$ 10,284,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
Operating income (loss) $ (237,000)us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
$ 245,000us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember
$ 964,000us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
/ us-gaap_BusinessAcquisitionAxis
= span_MCHealthcareProductsMchpMember