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Commitments And Contingencies (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011
Commitments And Contingencies [Abstract]
Letter of credit	$ 0.1

X

- Definition

Letter of credit obtained to support a commitment

+ References

No definition available.

+ Details

Name:	stxs_LetterOfCredit
Namespace Prefix:	stxs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration