$STAA
STAAR Surgical Co Stock $staa

$staa Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000156459021008098 Filed on February 24, 2021

Income Statement

Concept	2021	2020 Q1	2020
Revenue	$163.5M	$38.88M	$150.2M
YoY Change	8.84%	19.33%	-0.01%
Cost Of Revenue	$45.10M	$10.06M	$38.23M
YoY Change	17.96%	19.76%	0.08%
Gross Profit	$118.4M	$28.82M	$112.0M
YoY Change	5.72%	19.19%	-0.04%
Gross Profit Margin	72.41%	74.13%	74.54%
Selling, General & Admin	$111.4M	$19.07M	$79.70M
YoY Change	39.82%	-15.68%	6.55%
% of Gross Profit	94.15%	66.17%	71.19%
Research & Development	$33.86M	$7.410M	$25.30M
YoY Change	33.85%	31.5%	-0.01%
% of Gross Profit	28.61%	25.71%	22.6%
Depreciation & Amortization	$3.060M	$820.0K	$3.665M
YoY Change	-16.51%	-32.9%	-0.95%
% of Gross Profit	2.59%	2.85%	3.27%
Operating Expenses	$145.3M	$26.48M	$25.30M
YoY Change	474.35%	-6.27%	-74.73%
Operating Profit	$6.769M	$2.340M	$86.66M
YoY Change	-92.19%	49.52%	628.2%
Interest Expense	$238.0K	$500.0K	$988.0K
YoY Change	-75.91%	84.5%	97.6%
% of Operating Profit	3.52%	21.37%	1.14%
Other Income/Expense, Net	-$44.00K	$140.0K	$1.174M
YoY Change	-103.75%	-51.89%	67.71%
Pretax Income	$8.267M	$2.980M	$13.03M
YoY Change	-36.53%	60.56%	0.2%
Income Tax	$2.354M	-$3.400M	-$1.022M
% Of Pretax Income	28.47%	-114.09%	-7.85%
Net Earnings	$5.913M	$6.380M	$14.05M
YoY Change	-57.91%	366.72%	0.34%
Net Earnings / Revenue	3.62%	16.41%	9.35%
Basic Earnings Per Share	$0.13		$0.32
Diluted Earnings Per Share	$0.50	$135.6K	$0.30
COMMON SHARES
Basic Shares Outstanding	45.61M		44.49M
Diluted Shares Outstanding	47.95M		46.90M

Balance Sheet

Concept	2021	2020 Q1	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$199.7M	$120.0M	$152.5M
YoY Change	30.95%	17.53%	27.08%
Cash & Equivalents	$199.7M	$120.0M	$152.5M
Short-Term Investments
Other Short-Term Assets	$7.873M	$453.0K	$7.200M
YoY Change	9.35%	-23.48%	44.0%
Inventory	$17.27M	$17.10M	$18.10M
Prepaid Expenses		$3.031M
Receivables	$43.53M	$31.00M	$35.20M
Other Receivables	$3.027M	$1.600M	$3.500M
Total Short-Term Assets	$271.4M	$174.7M	$216.4M
YoY Change	25.42%	14.4%	23.87%
LONG-TERM ASSETS
Property, Plant & Equipment	$67.73M	$17.07M	$33.40M
YoY Change	102.78%	51.02%	30.47%
Goodwill		$1.786M
YoY Change		0.0%
Intangibles		$296.0K
YoY Change		12.55%
Long-Term Investments
YoY Change
Other Assets	$4.635M	$751.0K	$5.600M
YoY Change	-17.23%	-10.17%	7.69%
Total Long-Term Assets	$74.37M	$32.86M	$41.00M
YoY Change	81.38%	33.92%	25.0%
TOTAL ASSETS
Total Short-Term Assets	$271.4M	$174.7M	$216.4M
Total Long-Term Assets	$74.37M	$32.86M	$41.00M
Total Assets	$345.8M	$207.5M	$257.4M
YoY Change	34.33%	17.1%	24.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$8.699M	$8.050M	$7.900M
YoY Change	10.11%	14.71%	-2.47%
Accrued Expenses	$26.50M	$14.40M	$17.40M
YoY Change	52.29%	34.58%	20.83%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$1.800M	$1.400M
YoY Change	-100.0%	-45.45%	-22.22%
Long-Term Debt Due	$127.0K	$600.0K	$400.0K
YoY Change	-68.25%	-50.0%	-33.33%
Total Short-Term Liabilities	$48.80M	$34.48M	$41.20M
YoY Change	18.45%	22.13%	19.42%
LONG-TERM LIABILITIES
Long-Term Debt	$382.0K	$400.0K	$0.00
YoY Change		-42.86%	-100.0%
Other Long-Term Liabilities	$37.23M	$12.10M	$18.70M
YoY Change	99.06%	22.22%	54.55%
Total Long-Term Liabilities	$37.61M	$12.50M	$18.70M
YoY Change	101.11%	17.92%	49.6%
TOTAL LIABILITIES
Total Short-Term Liabilities	$48.80M	$34.48M	$41.20M
Total Long-Term Liabilities	$37.61M	$12.50M	$18.70M
Total Liabilities	$87.22M	$47.64M	$60.20M
YoY Change	44.88%	19.45%	26.47%
SHAREHOLDERS EQUITY
Retained Earnings		-$141.8M
YoY Change		-8.21%
Common Stock		$304.7M
YoY Change		3.95%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$258.6M	$159.9M	$197.2M
YoY Change
Total Liabilities & Shareholders Equity	$345.8M	$207.5M	$257.4M
YoY Change	34.33%	17.1%	24.05%

Cashflow Statement

Concept	2021	2020 Q1	2020
OPERATING ACTIVITIES
Net Income	$5.913M	$6.380M	$14.05M
YoY Change	-57.91%	366.72%	0.34%
Depreciation, Depletion And Amortization	$3.060M	$820.0K	$3.665M
YoY Change	-16.51%	-32.9%	-0.95%
Cash From Operating Activities	$20.95M	$9.800M	$25.80M
YoY Change	-18.78%	1240.63%	-0.02%
INVESTING ACTIVITIES
Capital Expenditures	$8.404M	-$2.980M	$10.10M
YoY Change	-16.75%	-235.27%	-199.17%
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities	-$8.404M	-$2.980M	-$10.18M
YoY Change	-17.43%	33.45%	-0.02%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	19.57M	830.0K	149.0K
YoY Change	13034.9%	-445.83%	-0.67%
NET CHANGE
Cash From Operating Activities	20.95M	9.800M	25.80M
Cash From Investing Activities	-8.404M	-2.980M	-10.18M
Cash From Financing Activities	19.57M	830.0K	149.0K
Net Change In Cash	32.49M	7.650M	15.97M
YoY Change	103.43%	-533.18%	1.26%
FREE CASH FLOW
Cash From Operating Activities	$20.95M	$9.800M	$25.80M
Capital Expenditures	$8.404M	-$2.980M	$10.10M
Free Cash Flow	$12.55M	$12.78M	$15.70M
YoY Change	-20.08%	-968.21%	-56.36%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2020Q1	us-gaap	Assets Assets	207523000
CY2020Q1	us-gaap	Fifo Inventory Amount FIFOInventoryAmount	17142000
CY2021Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2020Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2021Q1	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P10M24D
CY2020Q1	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P1Y1M6D
CY2021Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y2M12D
CY2020Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P2Y3M18D
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y8M19D
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y7M28D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y8M19D
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y7M6D
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y7M28D
CY2020Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	119968000
CY2020Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	30996000
CY2020Q1	staa	Prepaid Expenses Deposits And Other Assets Current PrepaidExpensesDepositsAndOtherAssetsCurrent	6560000
CY2020Q1	us-gaap	Assets Current AssetsCurrent	174666000
CY2020Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	17065000
CY2021Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	596000
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1867000
CY2021Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8764000
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	6684000
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	270000
CY2020Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	296000
CY2021Q1	us-gaap	Goodwill Goodwill	1786000
CY2020Q1	us-gaap	Goodwill Goodwill	1786000
CY2021Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	4944000
CY2020Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	4408000
CY2021Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	608000
CY2020Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	751000
CY2021Q1	us-gaap	Assets Assets	257416000
CY2021Q1	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	1379000
CY2020Q1	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	1827000
CY2021Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	7874000
CY2020Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	8050000
CY2021Q1	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	360000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-836000
CY2018	us-gaap	Royalty Income Nonoperating RoyaltyIncomeNonoperating	633000
CY2018	us-gaap	Revenues Revenues	123954000
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	32444000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	4968000
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	42587000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45257000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	4968000
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	498000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	101000
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	242000
CY2018	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	15000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-170000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4798000
CY2018	staa	Vested Restricted Stock Grants VestedRestrictedStockGrants	2000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.005
CY2018	staa	Effective Income Tax Rate Reconciliation Gilti Inclusion Percent EffectiveIncomeTaxRateReconciliationGILTIInclusionPercent	0.268
CY2018	staa	Income Tax Reconciliation Gilti Inclusion IncomeTaxReconciliationGILTIInclusion	1780000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.025
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-204000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.009
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	121000
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	30000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.593
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	4899000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.420
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-5472000
CY2020Q1	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	560000
CY2021Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2485000
CY2020Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2700000
CY2021Q1	staa	Sales Returns Valuation Allowance SalesReturnsValuationAllowance	4532000
CY2020Q1	staa	Sales Returns Valuation Allowance SalesReturnsValuationAllowance	3644000
CY2021Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	24606000
CY2020Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	17697000
CY2021Q1	us-gaap	Liabilities Current LiabilitiesCurrent	41236000
CY2020Q1	us-gaap	Liabilities Current LiabilitiesCurrent	34478000
CY2021Q1	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	38000
CY2020Q1	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	366000
CY2021Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	6537000
CY2020Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	4086000
CY2021Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	222000
CY2020Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	658000
CY2021Q1	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	221000
CY2020Q1	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	211000
CY2021Q1	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	11940000
CY2020Q1	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	7840000
CY2021Q1	us-gaap	Liabilities Liabilities	60194000
CY2020Q1	us-gaap	Liabilities Liabilities	47639000
CY2021Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000
CY2020Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000
CY2021Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	46448000
CY2021Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	46448000
CY2020Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	44822000
CY2020Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	44822000
CY2021Q1	us-gaap	Common Stock Value CommonStockValue	464000
CY2020Q1	us-gaap	Common Stock Value CommonStockValue	448000
CY2021Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	338194000
CY2020Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	304288000
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5545000
CY2020Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3048000
CY2021Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-135891000
CY2020Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-141804000
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	197222000
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	159884000
CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	257416000
CY2020Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	207523000
CY2020	us-gaap	Revenues Revenues	150185000
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	25298000
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	6769000
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3416000
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12320000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	42936000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	4968000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-170000
CY2021	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	238000
CY2020	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	988000
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-517000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	8267000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2354000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1022000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	5913000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	14048000
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.13
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.11
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45605000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	44493000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47953000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46895000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	14048000
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	3639000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	2265000
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	283000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	107000
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	717000
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	291000
CY2021	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-142000
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-139000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2497000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1728000
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	72150000
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	54000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1728000
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3459000
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11564000
CY2020	staa	Vested Restricted Stock Grants VestedRestrictedStockGrants	2000
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	159884000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	5913000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2497000
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	20646000
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13275000
CY2021	staa	Vested Restricted Stock Grants VestedRestrictedStockGrants	1000
CY2020	us-gaap	Depreciation Depreciation	3665000
CY2018	us-gaap	Depreciation Depreciation	2430000
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	34000
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	34000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3481000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	441000
CY2020	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	359000
CY2018	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	231000
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-14000
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-10000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	10547000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	6762000
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	275000
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	905000
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	1580000
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	1473000
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4502000
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6040000
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	950000
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4194000
CY2020	staa	Increase Decrease In Prepaid Expenses Deposits And Other Assets Current IncreaseDecreaseInPrepaidExpensesDepositsAndOtherAssetsCurrent	1313000
CY2018	staa	Increase Decrease In Prepaid Expenses Deposits And Other Assets Current IncreaseDecreaseInPrepaidExpensesDepositsAndOtherAssetsCurrent	598000
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1084000
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	243000
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	4435000
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	6102000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	25795000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	12767000
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10095000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2245000
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	83000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-10178000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2245000
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	72150000
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1294000
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1907000
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	515000
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	2018000
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	747000
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	54000
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3459000
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5195000
CY2020	staa	Proceeds From Vested Restricted Stock ProceedsFromVestedRestrictedStock	2000
CY2018	staa	Proceeds From Vested Restricted Stock ProceedsFromVestedRestrictedStock	2000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	149000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	74639000
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	203000
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	197000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	15969000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	85358000
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	119968000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	103999000
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2021	us-gaap	Fiscal Period FiscalPeriod	<p style="text-align:justify;margin-top:8pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Fiscal Year and Interim Reporting Periods</p> <p style="text-align:justify;margin-top:8pt;margin-bottom:0pt;text-indent:3.62%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Company’s fiscal year ends on the Friday nearest December 31 and each of the Company’s quarterly reporting periods generally consists of 13 weeks. Fiscal years 2020 and 2018 are based on a 52-week period and fiscal year 2019 is based on a 53-week period. </p>
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	717000
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	291000
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	242000
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	864000
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-517000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-836000
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<p style="margin-top:8pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Use of Estimates</p> <p style="text-align:justify;margin-top:8pt;margin-bottom:0pt;text-indent:3.62%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The consolidated financial statements have been prepared in conformity with GAAP and, as such, include amounts based on significant estimates and judgments of management with consideration given to materiality. Significant estimates used include determining valuation allowances for uncollectible trade receivables, sales returns reserves, obsolete and excess inventory reserves, deferred income taxes, and tax reserves, including valuation allowances for deferred tax assets, pension liabilities, evaluation of asset impairment, in determining the useful life of depreciable and definite-lived intangible assets, and in the variables and assumptions used to calculate and record stock-based compensation. Actual results could differ materially from those estimates. Throughout the COVID-19 pandemic the Company offered extended payment terms to assist its surgeon customers and their clinics as they resumed business. During the second half of 2020, the Company experienced improvements in customer payments and is unaware of any material impairment of customer receivables. The Company’s sales representatives throughout the world remain engaged with customers conducting online training and other educational courses which have been very well attended. This activity has given the Company insight into COVID-19’s impact on customers and potential impairment of receivables.</p>
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	152453000
CY2020Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	119968000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	103877000
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	122000
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	119968000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	103999000
CY2020	staa	Marketing And Support Services Related To Strategic Cooperation Agreements MarketingAndSupportServicesRelatedToStrategicCooperationAgreements	485000
CY2018	staa	Marketing And Support Services Related To Strategic Cooperation Agreements MarketingAndSupportServicesRelatedToStrategicCooperationAgreements	629000
CY2021Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	0
CY2020Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0
CY2020	us-gaap	Advertising Expense AdvertisingExpense	10990000
CY2018	us-gaap	Advertising Expense AdvertisingExpense	8981000
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="text-align:justify;margin-top:10pt;line-height:10pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Concentration of Credit Risk and Revenues</p> <p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;text-indent:3.62%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Financial instruments that potentially subject the Company to credit risk principally consist of trade receivables. This risk is limited due to the large number of customers comprising the Company’s customer base, and their geographic dispersion. As of January 1, 2021 and January 3, 2020, there was one customer who accounted for 46% and 43% of the Company’s consolidated trade receivables, respectively. Ongoing credit evaluations of customers’ financial condition are performed and, generally, no collateral is required. The Company maintains reserves for potential credit losses and such losses, taken together, have not exceeded management’s expectations.</p> <p style="text-align:justify;margin-top:10pt;margin-bottom:0pt;text-indent:3.62%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">There was one customer who accounted for 44%, 43% and 37% of the Company’s consolidated net sales for the years ended 2020, 2019 and 2018, respectively.</p>
CY2021Q1	staa	Estimated Return Inventory Value EstimatedReturnInventoryValue	1041000
CY2020Q1	staa	Estimated Return Inventory Value EstimatedReturnInventoryValue	869000
CY2021Q1	staa	Sales Returns Valuation Allowance SalesReturnsValuationAllowance	4532000
CY2020Q1	staa	Sales Returns Valuation Allowance SalesReturnsValuationAllowance	3644000
CY2021Q1	us-gaap	Goodwill Goodwill	1786000
CY2020Q1	us-gaap	Goodwill Goodwill	1786000
CY2017Q4	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	staa	Tax Cuts And Jobs Act Of2017 Deduction In Global Intangible Low Taxed Income Percentage TaxCutsAndJobsActOf2017DeductionInGlobalIntangibleLowTaxedIncomePercentage	0.50
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1150000
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-155000
CY2018	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	15000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1320000
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-1867000
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-139000
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-2639000
CY2021	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-142000
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5545000
CY2021Q1	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	35288000
CY2020Q1	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	31084000
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	59000
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	88000
CY2021Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	35229000
CY2020Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	30996000
CY2021Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	3679000
CY2020Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	3334000
CY2021Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	2174000
CY2020Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	1870000
CY2021Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	13717000
CY2020Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	12976000
CY2021Q1	us-gaap	Inventory Gross InventoryGross	19570000
CY2020Q1	us-gaap	Inventory Gross InventoryGross	18180000
CY2021Q1	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	1459000
CY2020Q1	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	1038000
CY2021Q1	us-gaap	Fifo Inventory Amount FIFOInventoryAmount	18111000
CY2020Q1	us-gaap	Fifo Inventory Amount FIFOInventoryAmount	17142000
CY2021Q1	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	3791000
CY2020Q1	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	3031000
CY2021Q1	us-gaap	Prepaid Insurance PrepaidInsurance	2677000
CY2020Q1	us-gaap	Prepaid Insurance PrepaidInsurance	1488000
CY2021Q1	staa	Consumption Tax Receivable ConsumptionTaxReceivable	1409000
CY2020Q1	staa	Consumption Tax Receivable ConsumptionTaxReceivable	875000
CY2021Q1	us-gaap	Value Added Tax Receivable Current ValueAddedTaxReceivableCurrent	2056000
CY2020Q1	us-gaap	Value Added Tax Receivable Current ValueAddedTaxReceivableCurrent	713000
CY2021	staa	Depreciation On Property Plant And Equipment DepreciationOnPropertyPlantAndEquipment	2801000
CY2020	staa	Depreciation On Property Plant And Equipment DepreciationOnPropertyPlantAndEquipment	3081000
CY2018	staa	Depreciation On Property Plant And Equipment DepreciationOnPropertyPlantAndEquipment	2430000
CY2021Q1	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	1484000
CY2020Q1	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	633000
CY2021Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	5028000
CY2020Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3260000
CY2021Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	24606000
CY2020Q1	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	17697000
CY2021Q1	staa	Percent Of Other Current Liabilities Included In Other PercentOfOtherCurrentLiabilitiesIncludedInOther	0.05
CY2020Q1	staa	Percent Of Other Current Liabilities Included In Other PercentOfOtherCurrentLiabilitiesIncludedInOther	0.05
CY2021Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	398000
CY2020Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	926000
CY2021Q1	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0346
CY2020Q1	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0617
CY2021Q1	staa	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	1376000
CY2020Q1	staa	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	2926000
CY2021Q1	staa	Finance Lease Accumulated Depreciation FinanceLeaseAccumulatedDepreciation	780000
CY2020Q1	staa	Finance Lease Accumulated Depreciation FinanceLeaseAccumulatedDepreciation	1059000
CY2021Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	596000
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1867000
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	259000
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	584000
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	30000
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	72000
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	30000
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	72000
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	561000
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1294000
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	22000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	679000
CY2021Q1	staa	Operating Lease Right Of Use Asset Gross OperatingLeaseRightOfUseAssetGross	14278000
CY2020Q1	staa	Operating Lease Right Of Use Asset Gross OperatingLeaseRightOfUseAssetGross	12343000
CY2021Q1	staa	Operating Lease Accumulated Depreciation OperatingLeaseAccumulatedDepreciation	5514000
CY2020Q1	staa	Operating Lease Accumulated Depreciation OperatingLeaseAccumulatedDepreciation	5659000
CY2021Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8764000
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	6684000
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	9022000
CY2020Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	6786000
CY2021Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0261
CY2020Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0182
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	3023000
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	2749000
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	3052000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	2774000
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	4938000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	3495000
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	2682000
CY2021Q1	us-gaap	Finance Lease Liability Payments Due In Next Rolling Twelve Months FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	366000
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	2219000
CY2021Q1	us-gaap	Finance Lease Liability Payments Due In Rolling Year Two FinanceLeaseLiabilityPaymentsDueInRollingYearTwo	20000
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	1804000
CY2021Q1	us-gaap	Finance Lease Liability Payments Due In Rolling Year Three FinanceLeaseLiabilityPaymentsDueInRollingYearThree	15000
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	837000
CY2021Q1	us-gaap	Finance Lease Liability Payments Due In Rolling Year Four FinanceLeaseLiabilityPaymentsDueInRollingYearFour	4000
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	595000
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	1325000
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	9462000
CY2021Q1	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	405000
CY2021Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	440000
CY2021Q1	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	7000
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	9022000
CY2021Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	398000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-16245000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-5321000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-2629000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	24512000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	18347000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	9268000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	8267000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	13026000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6639000
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2000
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15000
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	13000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	10000
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	3186000
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2446000
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1220000
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3203000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2459000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1230000
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-573000
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3003000
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	78000
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-373000
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-354000
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-105000
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	441000
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-849000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3481000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	441000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2354000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1022000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1671000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1736000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2735000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1394000
CY2021	staa	Permanent Differences Percentage PermanentDifferencesPercentage	0.004
CY2021	staa	Permanent Differences PermanentDifferences	29000
CY2020	staa	Permanent Differences Percentage PermanentDifferencesPercentage	0.005
CY2020	staa	Permanent Differences PermanentDifferences	60000
CY2018	staa	Permanent Differences Percentage PermanentDifferencesPercentage	0.005
CY2018	staa	Permanent Differences PermanentDifferences	34000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.009
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	74000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.022
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-284000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.001
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	8000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies State And Local EffectiveIncomeTaxRateReconciliationTaxContingenciesStateAndLocal	-0.169
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	-1397000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies State And Local EffectiveIncomeTaxRateReconciliationTaxContingenciesStateAndLocal	0.007
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	93000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies State And Local EffectiveIncomeTaxRateReconciliationTaxContingenciesStateAndLocal	-0.067
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	-447000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies Foreign EffectiveIncomeTaxRateReconciliationTaxContingenciesForeign	-0.279
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies Foreign IncomeTaxReconciliationTaxContingenciesForeign	-2304000
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies Foreign EffectiveIncomeTaxRateReconciliationTaxContingenciesForeign	-0.116
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies Foreign IncomeTaxReconciliationTaxContingenciesForeign	-1514000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies Foreign EffectiveIncomeTaxRateReconciliationTaxContingenciesForeign	-0.110
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies Foreign IncomeTaxReconciliationTaxContingenciesForeign	-730000
CY2021	staa	Effective Tax Rate For State Net Operating Tax Carryforwards Subject To Expiration EffectiveTaxRateForStateNetOperatingTaxCarryforwardsSubjectToExpiration	0.032
CY2021	staa	Effective Income Tax Rate Reconciliation Expiration Of State Net Operating Tax Carryforwards EffectiveIncomeTaxRateReconciliationExpirationOfStateNetOperatingTaxCarryforwards	268000
CY2020	staa	Effective Tax Rate For State Net Operating Tax Carryforwards Subject To Expiration EffectiveTaxRateForStateNetOperatingTaxCarryforwardsSubjectToExpiration	0.080
CY2020	staa	Effective Income Tax Rate Reconciliation Expiration Of State Net Operating Tax Carryforwards EffectiveIncomeTaxRateReconciliationExpirationOfStateNetOperatingTaxCarryforwards	1039000
CY2018	staa	Effective Tax Rate For State Net Operating Tax Carryforwards Subject To Expiration EffectiveTaxRateForStateNetOperatingTaxCarryforwardsSubjectToExpiration	0
CY2018	staa	Effective Income Tax Rate Reconciliation Expiration Of State Net Operating Tax Carryforwards EffectiveIncomeTaxRateReconciliationExpirationOfStateNetOperatingTaxCarryforwards	0
CY2021	staa	Effective Income Tax Rate Reconciliation Foreign Earnings Not Permanently Reinvested EffectiveIncomeTaxRateReconciliationForeignEarningsNotPermanentlyReinvested	-0.001
CY2021	staa	Income Tax Reconciliation Foreign Earnings Not Permanently Reinvested IncomeTaxReconciliationForeignEarningsNotPermanentlyReinvested	-5000
CY2020	staa	Effective Income Tax Rate Reconciliation Foreign Earnings Not Permanently Reinvested EffectiveIncomeTaxRateReconciliationForeignEarningsNotPermanentlyReinvested	-0.001
CY2020	staa	Income Tax Reconciliation Foreign Earnings Not Permanently Reinvested IncomeTaxReconciliationForeignEarningsNotPermanentlyReinvested	-7000
CY2018	staa	Effective Income Tax Rate Reconciliation Foreign Earnings Not Permanently Reinvested EffectiveIncomeTaxRateReconciliationForeignEarningsNotPermanentlyReinvested	-0.140
CY2018	staa	Income Tax Reconciliation Foreign Earnings Not Permanently Reinvested IncomeTaxReconciliationForeignEarningsNotPermanentlyReinvested	-926000
CY2018	staa	Effective Income Tax Rate Reconciliation Foreign Dividend Withholding Expense Income EffectiveIncomeTaxRateReconciliationForeignDividendWithholdingExpenseIncome	0.048
CY2018	staa	Income Tax Reconciliation Foreign Dividend Withholding IncomeTaxReconciliationForeignDividendWithholding	317000
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.058
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	476000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.065
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-434000
CY2021	staa	Effective Income Tax Rate Reconciliation Incentive Stock Option Compensation Percent EffectiveIncomeTaxRateReconciliationIncentiveStockOptionCompensationPercent	-0.594
CY2021	staa	Income Tax Reconciliation Incentive Stock Option Compensation IncomeTaxReconciliationIncentiveStockOptionCompensation	-4907000
CY2020	staa	Effective Income Tax Rate Reconciliation Incentive Stock Option Compensation Percent EffectiveIncomeTaxRateReconciliationIncentiveStockOptionCompensationPercent	-0.004
CY2020	staa	Income Tax Reconciliation Incentive Stock Option Compensation IncomeTaxReconciliationIncentiveStockOptionCompensation	-55000
CY2018	staa	Effective Income Tax Rate Reconciliation Incentive Stock Option Compensation Percent EffectiveIncomeTaxRateReconciliationIncentiveStockOptionCompensationPercent	-0.127
CY2018	staa	Income Tax Reconciliation Incentive Stock Option Compensation IncomeTaxReconciliationIncentiveStockOptionCompensation	-842000
CY2021	staa	Effective Income Tax Rate Reconciliation Non Qualified Stock Option And Restricted Stock Tax Deduction In Excess Of Cumulative Book Deduction Percent EffectiveIncomeTaxRateReconciliationNonQualifiedStockOptionAndRestrictedStockTaxDeductionInExcessOfCumulativeBookDeductionPercent	-0.523
CY2021	staa	Income Tax Reconciliation Non Qualified Stock Option And Restricted Stock Tax Deduction In Excess Of Cumulative Book Deduction IncomeTaxReconciliationNonQualifiedStockOptionAndRestrictedStockTaxDeductionInExcessOfCumulativeBookDeduction	-4324000
CY2020	staa	Effective Income Tax Rate Reconciliation Non Qualified Stock Option And Restricted Stock Tax Deduction In Excess Of Cumulative Book Deduction Percent EffectiveIncomeTaxRateReconciliationNonQualifiedStockOptionAndRestrictedStockTaxDeductionInExcessOfCumulativeBookDeductionPercent	-0.129
CY2020	staa	Income Tax Reconciliation Non Qualified Stock Option And Restricted Stock Tax Deduction In Excess Of Cumulative Book Deduction IncomeTaxReconciliationNonQualifiedStockOptionAndRestrictedStockTaxDeductionInExcessOfCumulativeBookDeduction	-1679000
CY2018	staa	Effective Income Tax Rate Reconciliation Non Qualified Stock Option And Restricted Stock Tax Deduction In Excess Of Cumulative Book Deduction Percent EffectiveIncomeTaxRateReconciliationNonQualifiedStockOptionAndRestrictedStockTaxDeductionInExcessOfCumulativeBookDeductionPercent	-0.127
CY2018	staa	Income Tax Reconciliation Non Qualified Stock Option And Restricted Stock Tax Deduction In Excess Of Cumulative Book Deduction IncomeTaxReconciliationNonQualifiedStockOptionAndRestrictedStockTaxDeductionInExcessOfCumulativeBookDeduction	-842000
CY2021	staa	Effective Income Tax Rate Reconciliation Executive Compensation Section Limitation Percent EffectiveIncomeTaxRateReconciliationExecutiveCompensationSectionLimitationPercent	0.430
CY2021	staa	Income Tax Reconciliation Executive Compensation Section Limitation IncomeTaxReconciliationExecutiveCompensationSectionLimitation	3552000
CY2020	staa	Effective Income Tax Rate Reconciliation Executive Compensation Section Limitation Percent EffectiveIncomeTaxRateReconciliationExecutiveCompensationSectionLimitationPercent	0.044
CY2020	staa	Income Tax Reconciliation Executive Compensation Section Limitation IncomeTaxReconciliationExecutiveCompensationSectionLimitation	569000
CY2018	staa	Effective Income Tax Rate Reconciliation Executive Compensation Section Limitation Percent EffectiveIncomeTaxRateReconciliationExecutiveCompensationSectionLimitationPercent	0.009
CY2018	staa	Income Tax Reconciliation Executive Compensation Section Limitation IncomeTaxReconciliationExecutiveCompensationSectionLimitation	60000
CY2021	staa	Effective Income Tax Rate Reconciliation Gilti Inclusion Percent EffectiveIncomeTaxRateReconciliationGILTIInclusionPercent	0.540
CY2021	staa	Income Tax Reconciliation Gilti Inclusion IncomeTaxReconciliationGILTIInclusion	4461000
CY2020	staa	Effective Income Tax Rate Reconciliation Gilti Inclusion Percent EffectiveIncomeTaxRateReconciliationGILTIInclusionPercent	0.259
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.342
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2269000
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.285
CY2020	staa	Income Tax Reconciliation Gilti Inclusion IncomeTaxReconciliationGILTIInclusion	3372000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2354000
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.078
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1022000
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.252
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1671000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2354000
CY2021	staa	Reversal Of Valuation Allowance ReversalOfValuationAllowance	495000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1022000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1671000
CY2021	staa	Increase Decrease In Foreign Deferred Tax Liabilities IncreaseDecreaseInForeignDeferredTaxLiabilities	-213000
CY2020	staa	Increase Decrease In Foreign Deferred Tax Liabilities IncreaseDecreaseInForeignDeferredTaxLiabilities	-46000
CY2018	staa	Increase Decrease In Foreign Deferred Tax Liabilities IncreaseDecreaseInForeignDeferredTaxLiabilities	36000
CY2021	staa	Income Tax Reconciliation Of Global Intangible Low Taxed Income IncomeTaxReconciliationOfGlobalIntangibleLowTaxedIncome	21300000
CY2020	staa	Income Tax Reconciliation Of Global Intangible Low Taxed Income IncomeTaxReconciliationOfGlobalIntangibleLowTaxedIncome	15100000
CY2018	staa	Income Tax Reconciliation Of Global Intangible Low Taxed Income IncomeTaxReconciliationOfGlobalIntangibleLowTaxedIncome	7700000
CY2021	us-gaap	Income Tax Holiday Description IncomeTaxHolidayDescription	The Company utilized the high-tax exception to exclude income from foreign jurisdictions with foreign taxes at an effective rate that is higher than 90 percent of the applicable highest U.S. corporate tax rate.
CY2021	staa	Tax Cuts And Jobs Act Of2017 Deduction In Global Intangible Low Taxed Income Percentage TaxCutsAndJobsActOf2017DeductionInGlobalIntangibleLowTaxedIncomePercentage	0.50
CY2021Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	357000
CY2020Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	233000
CY2021Q1	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	691000
CY2020Q1	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	703000
CY2021Q1	staa	Deferred Tax Assets Accrued Vacation DeferredTaxAssetsAccruedVacation	599000
CY2020Q1	staa	Deferred Tax Assets Accrued Vacation DeferredTaxAssetsAccruedVacation	428000
CY2021Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	786000
CY2020Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	1036000
CY2021Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3277000
CY2020Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2859000
CY2021Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1679000
CY2020Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1159000
CY2020Q1	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	162000
CY2021Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	38642000
CY2020Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	32251000
CY2021Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	3051000
CY2020Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	3164000
CY2021Q1	staa	Deferred Tax Assets Prepaid Expenses DeferredTaxAssetsPrepaidExpenses	280000
CY2020Q1	staa	Deferred Tax Assets Prepaid Expenses DeferredTaxAssetsPrepaidExpenses	272000
CY2021Q1	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	1000000
CY2020Q1	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	986000
CY2021Q1	staa	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	1687000
CY2020Q1	staa	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	1309000
CY2021Q1	staa	Deferred Tax Assets Liabilities Other Current DeferredTaxAssetsLiabilitiesOtherCurrent	19000
CY2020Q1	staa	Deferred Tax Assets Liabilities Other Current DeferredTaxAssetsLiabilitiesOtherCurrent	5000
CY2021Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	42502000
CY2020Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	37007000
CY2021Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	9566000
CY2020Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	7560000
CY2021Q1	staa	Deferred Tax Liabilities Tax Credit Carryforwards Foreign DeferredTaxLiabilitiesTaxCreditCarryforwardsForeign	1295000
CY2020Q1	staa	Deferred Tax Liabilities Tax Credit Carryforwards Foreign DeferredTaxLiabilitiesTaxCreditCarryforwardsForeign	1295000
CY2021Q1	staa	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	1662000
CY2020Q1	staa	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	1309000
CY2021Q1	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	424000
CY2021Q1	staa	Deferred Tax Liabilities Amortization Of Research And Development DeferredTaxLiabilitiesAmortizationOfResearchAndDevelopment	846000
CY2020Q1	staa	Deferred Tax Liabilities Amortization Of Research And Development DeferredTaxLiabilitiesAmortizationOfResearchAndDevelopment	805000
CY2021Q1	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	617000
CY2020Q1	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	401000
CY2021Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	4844000
CY2020	us-gaap	Revenues Revenues	150185000
CY2020Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3810000
CY2021Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	4722000
CY2020Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	3750000
CY2021Q1	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	4650000
CY2020Q1	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	2572000
CY2021Q1	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	152863000
CY2021	staa	Operating Loss Carry Forwards Expiration Term OperatingLossCarryForwardsExpirationTerm	expire in varying amounts between 2021 and 2037
CY2021	staa	Operating Losses And Research And Development Credits Carryforwards Limitations On Use OperatingLossesAndResearchAndDevelopmentCreditsCarryforwardsLimitationsOnUse	. In 2020, California enacted Assembly Bill 85 which imposed limits on the usability of California state net operating losses and research and development credits in tax years beginning after 2019 and before 2023.
CY2021	us-gaap	Operating Loss Carryforwards Limitations On Use OperatingLossCarryforwardsLimitationsOnUse	The California net operating loss carryforwards expire in varying amounts between 2028 and 2039
CY2021	staa	Description Related To Benefit Based Under Point System DescriptionRelatedToBenefitBasedUnderPointSystem	Each point earned is worth a fixed monetary value, 1,000 Yen per point, regardless of the level grade or zone of the employee. Gross benefits are calculated based on the cumulative number of points earned over the service period multiplied by 1,000 Yen. The mandatory retirement age limit is 60 years old
CY2021Q1	staa	Defined Contribution Plan Employees Eligible Payroll DefinedContributionPlanEmployeesEligiblePayroll	19500
CY2021Q1	staa	Defined Contribution Plan Employees Catch Up Contribution DefinedContributionPlanEmployeesCatchUpContribution	6500
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.80
CY2021	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.06
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1281000
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1279000
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	996000
CY2021	staa	Sharebased Compensation Arrangement By Sharebased Payment Award Granted In Period Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardGrantedInPeriodFairValue	14286000
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12146000
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10547000
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6762000
CY2021	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1129000
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1017000
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12146000
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10547000
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6762000
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	637000
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	13275000
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	11564000
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	7399000
CY2021Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	12545000
CY2021Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	3917000
CY2021Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	16462000
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y
CY2021	staa	Estimated Forfeiture Rate EstimatedForfeitureRate	0.06
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.53
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.53
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.53
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0053
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0240
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0271
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4326000
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	16.46
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	621000
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	28.78
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1507000
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	13.70
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	22000
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	32.35
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3418000
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.80
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	203087000
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2372000
CY2021Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	15.05
CY2021Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	152218000
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	13.85
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	17.95
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	11.95
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	59771000
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	9955000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	13699000
CY2018Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	1999850
CY2018Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	36.309
CY2018Q3	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	72150000
CY2021Q1	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	221000
CY2020Q1	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	211000
CY2021Q1	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	8446000
CY2021	us-gaap	Loss Contingency Date Of Dismissal LossContingencyDateOfDismissal	2021-01-15
CY2018	us-gaap	Interest Paid InterestPaid	130000
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	1336000
CY2021Q1	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	5000
CY2020Q1	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	1000
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	22000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	679000
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1656000
CY2021	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	523000
CY2020	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	381000
CY2018	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	207000
CY2021	us-gaap	Interest Paid InterestPaid	64000
CY2020	us-gaap	Interest Paid InterestPaid	105000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	44493000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	42587000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47953000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46895000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45257000
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.13
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2021	us-gaap	Revenues Revenues	163460000
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	792000
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	635000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	5913000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	14048000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	4968000
CY2021	us-gaap	Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation	45616000
CY2020	us-gaap	Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation	44504000
CY2018	us-gaap	Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation	42598000
CY2021	staa	Unvested Restricted Stock Shares UnvestedRestrictedStockShares	-11000
CY2020	staa	Unvested Restricted Stock Shares UnvestedRestrictedStockShares	-11000
CY2018	staa	Unvested Restricted Stock Shares UnvestedRestrictedStockShares	-11000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45605000
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.11
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	20000
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1503000
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	315000
CY2020	us-gaap	Revenues Revenues	150185000
CY2018	us-gaap	Revenues Revenues	123954000
CY2021Q1	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	75
CY2021	us-gaap	Revenues Revenues	163460000
CY2020	us-gaap	Revenues Revenues	150185000
CY2018	us-gaap	Revenues Revenues	123954000
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	22053000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	20863000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	22872000
CY2021	us-gaap	Revenues Revenues	163460000
CY2018	us-gaap	Revenues Revenues	123954000
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24030000
CY2021Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	596000
CY2021Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8764000
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	270000
CY2021Q1	us-gaap	Noncurrent Assets NoncurrentAssets	33660000
CY2020Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	17065000
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1867000
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	6684000
CY2020Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	296000
CY2020Q1	us-gaap	Noncurrent Assets NoncurrentAssets	25912000
CY2020Q2	us-gaap	Revenues Revenues	35187000
CY2020Q3	us-gaap	Revenues Revenues	35194000
CY2020Q4	us-gaap	Revenues Revenues	47081000
CY2021Q1	us-gaap	Revenues Revenues	45998000
CY2020Q2	us-gaap	Gross Profit GrossProfit	24760000
CY2020Q3	us-gaap	Gross Profit GrossProfit	24430000
CY2020Q4	us-gaap	Gross Profit GrossProfit	34871000
CY2021Q1	us-gaap	Gross Profit GrossProfit	34301000
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-134000
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-1172000
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	3892000
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	3327000
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.03
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.08
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.07
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.03
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.08
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2019Q1	us-gaap	Revenues Revenues	32583000
CY2019Q2	us-gaap	Revenues Revenues	39664000
CY2019Q3	us-gaap	Revenues Revenues	39055000
CY2019Q2	us-gaap	Gross Profit GrossProfit	29899000
CY2021	us-gaap	Reclassifications Reclassifications	<p style="text-align:justify;margin-top:8pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Note 20 – Reclassifications</p> <p style="text-align:justify;margin-top:8pt;margin-bottom:0pt;text-indent:3.62%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Certain amounts in previously issued financial statements related to income tax expense, deferred taxes and valuation allowance have been reclassified to conform to fiscal 2020 presentation.</p>
	us-gaap	Revenues Revenues	38883000
CY2019Q1	us-gaap	Gross Profit GrossProfit	24180000
CY2019Q3	us-gaap	Gross Profit GrossProfit	29051000
	us-gaap	Gross Profit GrossProfit	28824000
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	1367000
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	3914000
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	2388000
	us-gaap	Net Income Loss NetIncomeLoss	6379000
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.09
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.05
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.08
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.05
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2020Q1	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	40739000
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	11937000
CY2021	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	5583000
CY2021Q1	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	47093000
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	46520000
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	739000
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	6520000
CY2020Q1	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	40739000
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	43187000
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	8215000
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	4882000
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	46520000

Files In Submission

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$STAA
STAAR Surgical Co Stock $staa

2021 Form 10-K Financial Statement

#000156459021008098 Filed on February 24, 2021

Income Statement

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Cashflow Statement

Facts In Submission

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$STAA STAAR Surgical Co Stock $staa

2021 Form 10-K Financial Statement

#000156459021008098 Filed on February 24, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STAA
STAAR Surgical Co Stock $staa