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Accounts Receivable Trade, Net (Details) (USD $) In Thousands, unless otherwise specified	Jan. 02, 2015	Jan. 03, 2014
Accounts Receivable [Line Items]
Accounts Receivable, Gross	$ 12,643us-gaap_AccountsReceivableGross	$ 12,180us-gaap_AccountsReceivableGross
Less allowance for doubtful accounts and sales returns	1,589us-gaap_AllowanceForDoubtfulAccountsReceivable	1,449us-gaap_AllowanceForDoubtfulAccountsReceivable
Accounts Receivable, Net	11,054us-gaap_AccountsReceivableNet	10,731us-gaap_AccountsReceivableNet
Domestic [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Gross	1,818us-gaap_AccountsReceivableGross / us-gaap_StatementGeographicalAxis = staa_DomesticMember	2,135us-gaap_AccountsReceivableGross / us-gaap_StatementGeographicalAxis = staa_DomesticMember
Foreign [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Gross	$ 10,825us-gaap_AccountsReceivableGross / us-gaap_StatementGeographicalAxis = staa_ForeignMember	$ 10,045us-gaap_AccountsReceivableGross / us-gaap_StatementGeographicalAxis = staa_ForeignMember

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- Definition

For unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.9)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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X

- Definition

For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.9)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.5)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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