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Commitments and Contingencies (Details Textual) (USD $) | 12 Months Ended
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Dec. 28, 2012 | Dec. 30, 2011 | Dec. 31, 2010
Payments for Rent | $ 1,900,000 | $ 1,800,000 | $ 1,800,000
Depreciation For Assets Held Under Capital Lease | $ 522,000 | $ 615,000 | $ 713,000

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- Definition Depreciation for assets held under capital Lease during the period. + References No definition available. + Details
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Namespace Prefix: | staa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Cash payments to lessor's for use of assets under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 27 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration