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Basis of Presentation and Significant Accounting Policies (Details 1) - USD ($) $ in Thousands		Jun. 29, 2018	Dec. 29, 2017
Estimated returns - inventory	[1]	$ 462	$ 534
Allowance for sales returns		$ 2,582	$ 2,546
[1] Recognized in inventories, net on the Condensed Consolidated Balance Sheets

X

- Definition

Amount of inventory estimated to be returmed from the buyer.

+ References

No definition available.

+ Details

Name:	staa_EstimatedReturnInventoryValue
Namespace Prefix:	staa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

A allowance for the amount of products sold that the entity expects to be returned by the purchaser recorded as current liabilities

+ References

No definition available.

+ Details

Name:	staa_SalesReturnsValuationAllowance
Namespace Prefix:	staa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant