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Long-Term Debt And Credit Facilities (Schedule Of Long-Term Debt Outstanding) (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Total long term debt $ 18,319,895us-gaap_LongTermDebtNoncurrent $ 18,388,764us-gaap_LongTermDebtNoncurrent
Carrying Amount [Member]    
Debt Instrument [Line Items]    
Total debt 18,319,895us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
18,388,764us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Total long term debt 18,319,895us-gaap_LongTermDebtNoncurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
18,388,764us-gaap_LongTermDebtNoncurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Estimated Fair Value [Member]    
Debt Instrument [Line Items]    
Total debt 18,319,895us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
18,388,764us-gaap_LongTermDebt
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Total long term debt 18,319,895us-gaap_LongTermDebtNoncurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
18,388,764us-gaap_LongTermDebtNoncurrent
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Healthcare Royalty Partners Debt [Member] | Carrying Amount [Member]    
Debt Instrument [Line Items]    
Total debt 18,319,895us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= stxs_CowenDebtMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
18,388,764us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= stxs_CowenDebtMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Healthcare Royalty Partners Debt [Member] | Estimated Fair Value [Member]    
Debt Instrument [Line Items]    
Total debt $ 18,319,895us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= stxs_CowenDebtMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
$ 18,388,764us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= stxs_CowenDebtMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember