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Commitments and Contingencies (Details Textual) (USD $) | 12 Months Ended
--- | ---
Jan. 03, 2014 | Dec. 28, 2012 | Dec. 30, 2011
Loss Contingencies [Line Items] |  |  |
Payments for Rent | $ 1,500,000 | $ 1,900,000 | $ 1,800,000
Depreciation For Assets Held Under Capital Lease | 566,000 | 522,000 | 615,000
Finished Goods Inventory [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Long-term Purchase Commitment, Amount | 1,064,000 |  |
Property, Plant and Equipment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Long-term Purchase Commitment, Amount | $ 800,000 |  |

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

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- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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=31042434&loc=d3e3536-108585 + Details
Name: | us-gaap_PaymentsForRent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration