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Organization and Description of Business and Accounting Policies (Details) | 12 Months Ended
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Dec. 30, 2016
Organization And Description Of Business And Accounting Policies [Line Items] |
Lease hold Improvements Description | The estimated useful life of leasehold improvements is the shorter of the useful life of the asset or the term of the associated leases.
Maximum [Member] | Machinery and Equipment [Member] |
Organization And Description Of Business And Accounting Policies [Line Items] |
Property, Plant and Equipment, Useful Life | 10 years
Maximum [Member] | Furniture and Fixtures [Member] |
Organization And Description Of Business And Accounting Policies [Line Items] |
Property, Plant and Equipment, Useful Life | 7 years
Maximum [Member] | Computer and Equipment [Member] |
Organization And Description Of Business And Accounting Policies [Line Items] |
Property, Plant and Equipment, Useful Life | 5 years
Minimum [Member] | Machinery and Equipment [Member] |
Organization And Description Of Business And Accounting Policies [Line Items] |
Property, Plant and Equipment, Useful Life | 5 years
Minimum [Member] | Furniture and Fixtures [Member] |
Organization And Description Of Business And Accounting Policies [Line Items] |
Property, Plant and Equipment, Useful Life | 3 years
Minimum [Member] | Computer and Equipment [Member] |
Organization And Description Of Business And Accounting Policies [Line Items] |
Property, Plant and Equipment, Useful Life | 2 years

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- Definition Description of lease hold improvements. + References No definition available. + Details
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Namespace Prefix: | staa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | staa_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |