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Geographic and Product Data (Details Textual)	3 Months Ended
	Apr. 03, 2015	Apr. 04, 2014
Geographic and Product Data [Line Items]
Disclosure on Geographic Areas, Description of Revenue from External Customers	The Company markets and sells its products in over 60 countries and has manufacturing sites in the United States and Switzerland. Other than the United States, Japan, Korea, China, Spain, and France, the Company does not conduct business in any country in which its sales exceed 5% of consolidated net sales.
Segment Sales To Consolidated Sales Percentage	100.00%staa_SegmentSalesToConsolidatedSalesPercentage
Single Customer [Member]
Geographic and Product Data [Line Items]
Concentration Risk, Percentage	12.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = staa_SingleCustomerMember	13.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = staa_SingleCustomerMember

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- Definition

The percentage of segment sales to consolidated sales percentage.

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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- Definition

Disclosure about revenues from external customers (1) attributed to the entity's country of domicile and (2) attributed to all foreign countries in total from which the entity derives revenues.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

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