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Manufacturing Consolidation Project and Tax Strategy (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 03, 2014
Schedule Of Restructuring Reserve By Type Of Cost [Line Items]
Estimated Cost Of Project	$ 5.9
Cost Of Project	2.2
Operating Loss Carryforwards	$ 121.7

X

- Definition

Represents the cost incurred on development project.

+ References

No definition available.

+ Details

Name:	staa_CostOfProject
Namespace Prefix:	staa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the estimated cost of project to be undertaken.

+ References

No definition available.

+ Details

Name:	staa_EstimatedCostOfProject
Namespace Prefix:	staa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	staa_ScheduleOfRestructuringReserveByTypeOfCostLineItems
Namespace Prefix:	staa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant