XML 85 R47.htm IDEA: XBRL DOCUMENT
v3.8.0.1

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
Name: | staa_GeographicAndProductDataLineItems
Namespace Prefix: | staa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition It represent sales exceed percentage. + References No definition available. + Details
Name: | staa_SalesExceedPercentage
Namespace Prefix: | staa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of countries in which the entity operates as of balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfCountriesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_MajorCustomersAxis=staa_Customer1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |