XML 94 R79.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Stockholders' Equity - Additional Information (Details) - USD ($) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 10, 2018 | Jun. 14, 2018 | Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016 | Feb. 11, 2016
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Beneficial Ownership Percentage of Investor |  |  |  |  |  | 26.00%
Allocated Share-based Compensation Expense |  |  | $ 6,762,000 | $ 3,161,000 | $ 8,558,000 |
Weighted-average period of cost expected to recognize |  |  | 2 years |  |  |
Estimated forfeiture rate |  |  | 11.00% |  |  |
Proceeds from public offering of stock (in shares) | 1,999,850 |  |  |  |  |
Shares issued, price per share | $ 36.309 |  |  |  |  |
Proceeds from public offering of stock | $ 72,150,000 |  |  |  |  |
General and Administrative Expense |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | $ 2,635,000 | 1,487,000 | 3,809,000 |
Selling and Marketing Expense |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | 1,805,000 | 805,000 | 1,961,000 |
Research and Development Expense |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | 2,307,000 | 861,000 | 2,176,000 |
Cost of Sales |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | $ 15,000 | $ 8,000 | 612,000 |
Omnibus Equity Incentive Plan 2003 |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  | 6,857,000 |
Allocated share-based compensation expense would have been recognized |  |  |  |  | 3,338,000 |
Omnibus Equity Incentive Plan 2003 | General and Administrative Expense |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  | 2,931,000 |
Omnibus Equity Incentive Plan 2003 | Selling and Marketing Expense |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  | 1,527,000 |
Omnibus Equity Incentive Plan 2003 | Research and Development Expense |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  | 1,838,000 |
Omnibus Equity Incentive Plan 2003 | Cost of Sales |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  | 561,000 |
Omnibus Equity Incentive Plan 2003 | Restricted Stock And Restricted Stock Units |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  | 2,288,000 |
Omnibus Equity Incentive Plan 2003 | Employee Stock Option |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  | $ 4,569,000 |
Omnibus Plan |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  | 10 years |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized |  | 2,235,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  | 15,385,000 |  |  |  |
Omnibus Plan | Restricted Stock |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |  |  | 2,479,205 |  |  |

X
- Definition Allocated share based compensation expense would recognize subsequent period. + References No definition available. + Details
Name: | staa_AllocatedShareBasedCompensationExpenseWouldRecognizeSubsequentPeriod
Namespace Prefix: | staa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of beneficial ownership percentage of an outside investor. + References No definition available. + Details
Name: | staa_BeneficialOwnershipPercentageOfInvestor
Namespace Prefix: | staa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Estimated forfeiture rate during the period. + References No definition available. + Details
Name: | staa_EstimatedForfeitureRate
Namespace Prefix: | staa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stockholders Equity Note [line item] + References No definition available. + Details
Name: | staa_StockholdersEquityNoteLineItems
Namespace Prefix: | staa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new stock issued during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingAndMarketingExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_ResearchAndDevelopmentExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=staa_OmnibusEquityIncentivePlan2003Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_OptionIndexedToIssuersEquityTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=staa_OmnibusPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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