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Geographic and Product Data (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 03, 2015	Apr. 04, 2014
Geographic and Product Data [Line Items]
Net sales	$ 18,858us-gaap_SalesRevenueNet	$ 20,178us-gaap_SalesRevenueNet
Japan [Member]
Geographic and Product Data [Line Items]
Net sales	4,286us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_JP	5,008us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_JP
United States [Member]
Geographic and Product Data [Line Items]
Net sales	2,867us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US	2,874us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US
China [Member]
Geographic and Product Data [Line Items]
Net sales	2,371us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN	2,225us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN
Korea [Member]
Geographic and Product Data [Line Items]
Net sales	2,343us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_KR	2,621us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_KR
Spain [Member]
Geographic and Product Data [Line Items]
Net sales	1,478us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_ES	1,618us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_ES
France [Member]
Geographic and Product Data [Line Items]
Net sales	1,150us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_FR	946us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_FR
Others [Member]
Geographic and Product Data [Line Items]
Net sales	$ 4,363us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = staa_OtherCountriesMember	$ 4,886us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = staa_OtherCountriesMember

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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