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Note 13 - Equity Compensation (Details Textual) (USD $)
12 Months Ended 1 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 29, 2012
Mar. 31, 1997
Feb. 28, 2007
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]          
Share-based Compensation $ 26,637us-gaap_ShareBasedCompensation $ 34,242us-gaap_ShareBasedCompensation $ 72,264us-gaap_ShareBasedCompensation    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 26,637us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized        
The 2007 Equity Incentive Plan [Member]          
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized         250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= span_TheEquityIncentivePlanMember
The 2000 Restricted Stock Plan [Member]          
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]          
Share-based Compensation $ 0us-gaap_ShareBasedCompensation
/ us-gaap_PlanNameAxis
= span_TheRestrictedStockPlanMember
$ 0us-gaap_ShareBasedCompensation
/ us-gaap_PlanNameAxis
= span_TheRestrictedStockPlanMember
$ 2,470us-gaap_ShareBasedCompensation
/ us-gaap_PlanNameAxis
= span_TheRestrictedStockPlanMember
   
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
/ us-gaap_PlanNameAxis
= span_TheRestrictedStockPlanMember
       
The 1997 Stock Option Plan [Member]          
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized       200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= span_TheStockOptionPlanMember
 
Share-based Compensation Arrangement by Share-based Payment Award Award Vesting Rights Shares Vesting Per Year       1,000span_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsSharesVestingPerYear
/ us-gaap_PlanNameAxis
= span_TheStockOptionPlanMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       20.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_PlanNameAxis
= span_TheStockOptionPlanMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period       10 years  
The 1997 Stock Option Plan [Member] | Termination of Employment [Member]          
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period       90 days  
Restricted Stock, Non-restricted Stock or Restricted Stock Units [Member] | The 2007 Equity Incentive Plan [Member]          
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized         75,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= span_RestrictedStocknonRestrictedStockOrRestrictedStockUnitsMember
/ us-gaap_PlanNameAxis
= span_TheEquityIncentivePlanMember