Additional amount borrowed

No definition available.

Name:	stxs_AdditionalAmountBorrowed
Namespace Prefix:	stxs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of additional debt the company may borrow based on the achievement of certain milestones, as stated in the loan agreement

+ References

No definition available.

+ Details

Name:	stxs_AdditionalIssuanceOfSecuredDebt
Namespace Prefix:	stxs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Under the terms of the Agreement, the lender will be entitled to receive 100% of all royalties due to the Company under its royalty agreement until the loan is repaid

+ References

No definition available.

+ Details

Name:	stxs_PercentageOfRoyaltiesToRepaySecuredDebt
Namespace Prefix:	stxs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfSecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=stxs_CowenDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-Term Debt And Credit Facilities (Healthcare Royalty Partners Debt) (Narrative) (Details) - Healthcare Royalty Partners Debt [Member] - USD ($) $ in Millions			1 Months Ended	6 Months Ended
	Jan. 31, 2013	Aug. 08, 2012	Nov. 30, 2011	Jun. 30, 2015
Debt Instrument [Line Items]
Amount borrowed			$ 15.0
Additional amount which may be borrowed			$ 5.0
Additional amount borrowed	$ 2.5	$ 2.5
Percentage of royalties entitled to receive			100.00%
Debt maturity date				Dec. 31, 2018
Annual interest rate			16.00%