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Geographic and Product Data (Details 1) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Apr. 03, 2015 | Apr. 04, 2014
Product Information [Line Items] |  |
Net sales | $ 18,858 us-gaap_SalesRevenueNet | $ 20,178 us-gaap_SalesRevenueNet
Implantable Collamer Lenses [Member] |  |
Product Information [Line Items] |  |
Net sales | 12,255 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = staa_ImplantableCollamerLensesMember | 12,241 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = staa_ImplantableCollamerLensesMember
Intraocular Lenses [Member] |  |
Product Information [Line Items] |  |
Net sales | 5,358 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = staa_IntraocularLensesMember | 6,613 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = staa_IntraocularLensesMember
Core products [Member] |  |
Product Information [Line Items] |  |
Net sales | 17,613 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = staa_CoreProductsMember | 18,854 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = staa_CoreProductsMember
Other surgical products [Member] |  |
Product Information [Line Items] |  |
Net sales | $ 1,245 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = staa_OtherSurgicalProductsMember | $ 1,324 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = staa_OtherSurgicalProductsMember

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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 + Details
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