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Basis of Presentation and Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
	Jul. 03, 2015	Jul. 03, 2015
Royalty Income [Member]
Prior Period Reclassification Adjustment	$ 106,000	$ 151,000

X

- Definition

The amount of a reclassification adjustment made to prior period financial statement amounts.

+ References

No definition available.

+ Details

Name:	us-gaap_PriorPeriodReclassificationAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=staa_RoyaltyIncomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: