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Other Current Liabilities (Details Textual) | 12 Months Ended
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Jan. 03, 2014
Other Liabilities, Current [Line Items] |
Percentage Of Other Current Liabilities | 5.00%

X
- Details
Name: | staa_OtherLiabilitiesCurrentLineItems
Namespace Prefix: | staa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represent the percentage of total other current liabilities. + References No definition available. + Details
Name: | staa_PercentageOfOtherCurrentLiabilities
Namespace Prefix: | staa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration