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Disaggregation of Revenues, Geographic Sales and Product Sales (Details Textual)	3 Months Ended		12 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Dec. 29, 2017
Geographic and Product Data [Line Items]
Number of Countries in which Entity Operates	75
Sales Exceed Percentage	10.00%
Customer One [Member] | Accounts Receivable [Member]
Geographic and Product Data [Line Items]
Concentration Risk, Percentage	31.00%		24.00%
Customer One [Member] | Sales Revenue, Net [Member]
Geographic and Product Data [Line Items]
Concentration Risk, Percentage	29.00%	23.00%

X

- Definition

Line items represents the geographic and product data.

+ References

No definition available.

+ Details

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Namespace Prefix:	staa_
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Balance Type:	na
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- Definition

It represent sales exceed percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	staa_
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X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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X

- Definition

The number of countries in which the entity operates as of balance sheet date.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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