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Other Current Liabilities (Details Textual)	9 Months Ended
	Oct. 02, 2015
Other Liabilities, Current [Line Items]
Percentage Of Other Current Liabilities	5.00%

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