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v3.3.1.900

Other Current Liabilities (Details Textual) | 12 Months Ended
--- | ---
Jan. 01, 2016
Other Liabilities, Current [Line Items] |  |
Percentage Of Other Current Liabilities | 5.00% | [1]
[1] | No item in "Other" above exceeds 5% of total other current liabilities.

X
- Definition Line items represents the other current liabilities. + References No definition available. + 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