XML 126 R79.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Income Taxes - Summary of Income Tax Examinations (Details) | 12 Months Ended
--- | ---
Jan. 03, 2020
SWITZERLAND |
Income Taxes [Line Items] |
Income Tax Examination, Year under Examination | 2018
Minimum | US Federal |
Income Taxes [Line Items] |
Income Tax Examination, Year under Examination | 2016
Minimum | California |
Income Taxes [Line Items] |
Income Tax Examination, Year under Examination | 2015
Minimum | JAPAN |
Income Taxes [Line Items] |
Income Tax Examination, Year under Examination | 2017
Maximum | US Federal |
Income Taxes [Line Items] |
Income Tax Examination, Year under Examination | 2018
Maximum | California |
Income Taxes [Line Items] |
Income Tax Examination, Year under Examination | 2018
Maximum | JAPAN |
Income Taxes [Line Items] |
Income Tax Examination, Year under Examination | 2018

X
- Definition Line items represent the income taxes. + References No definition available. + Details
Name: | staa_IncomeTaxesLineItems
Namespace Prefix: | staa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax year being audited in the income tax examination, in CCYY format. + References No definition available. + Details
Name: | us-gaap_IncomeTaxExaminationYearUnderExamination
Namespace Prefix: | us-gaap_
Data Type: | us-types:gYearListItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=country_CH
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_JP
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |