XML 111 R99.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Stockholders' Equity - Share-based Compensation, Performance Shares Award Unvested Activity (Details) - $ / shares shares in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Jan. 01, 2021 | Jan. 03, 2020
Schedule of Nonvested Options Activity [Line Items] |  |  |
Options, Granted, Shares | 273 |  |
Granted, Weighted Average Grant Date Fair Value | $ 45.08 | $ 13.85 | $ 17.95
Nonvested Stock Options |  |  |
Schedule of Nonvested Options Activity [Line Items] |  |  |
Options, Unvested at January 1, 2021 | 1,046 |  |
Options, Granted, Shares | 273 |  |
Options, Forfeited or expired, Shares | (50) |  |
Options, Vested, Shares | (697) |  |
Options, Unvested at December 31, 2021 | 572 | 1,046 |
Unvested at January 1, 2021, Weighted-Average Grant-Date Fair Value | $ 15.09 |  |
Granted, Weighted Average Grant Date Fair Value | 45.08 |  |
Forfeited or expired during the year, Weighted Average Grant Date Fair Value | 7.89 |  |
Vested during the year, Weighted Average Grant Date Fair Value | 15.74 |  |
Unvested at December 31, 2021, Weighted Average Grant Date Fair Value | $ 28.63 | $ 15.09 |

X
- Definition Schedule of Nonvested Options Activity [Line Items] + References No definition available. + Details
Name: | staa_ScheduleOfNonvestedOptionsActivityLineItems
Namespace Prefix: | staa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non-vested options outstanding. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of non-vested options forfeited. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options vested. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=staa_NonvestedStockOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |