$VXRT
Vaxart, Inc. Stock $vxrt

$vxrt Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000143774922004354 Filed on February 24, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021
Revenue	$74.00K	$200.0K	$892.0K
YoY Change	-79.21%	-24.53%	-77.95%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$5.754M	$5.042M	$21.89M
YoY Change	12.16%	20.33%	44.01%
% of Gross Profit
Research & Development	$15.53M	$12.41M	$48.75M
YoY Change	80.79%	168.83%	145.43%
% of Gross Profit
Depreciation & Amortization	$1.198M	$211.0K	$732.0K
YoY Change	39.3%	520.59%	542.11%
% of Gross Profit
Operating Expenses	$24.29M	$17.45M	$73.64M
YoY Change	77.07%	122.19%	115.23%
Operating Profit		-$17.25M	-$72.75M
YoY Change		127.32%	141.14%
Interest Expense	$23.00K	$26.00K	$0.00
YoY Change	130.0%
% of Operating Profit
Other Income/Expense, Net	-$343.0K	-$337.0K	-$1.480M
YoY Change	-27.02%	-28.3%	-22.11%
Pretax Income	-$20.75M	-$17.56M	-$70.36M
YoY Change	50.01%	117.92%	120.01%
Income Tax	$18.00K	$21.00K	$107.0K
% Of Pretax Income
Net Earnings	-$20.76M	-$17.58M	-$70.47M
YoY Change	49.8%	117.48%	118.72%
Net Earnings / Revenue	-28059.46%	-8791.5%	-7900.22%
Basic Earnings Per Share		-$0.14	-$0.58
Diluted Earnings Per Share	-$165.5K	-$141.8K	-$580.2K
COMMON SHARES
Basic Shares Outstanding	125.5M	122.8M	121.5M
Diluted Shares Outstanding

Balance Sheet

Concept	2021 Q4	2021 Q3	2021
SHORT-TERM ASSETS
Cash & Short-Term Investments	$166.5M	$187.7M	$166.5M
YoY Change	31.23%	40.68%	31.2%
Cash & Equivalents	$143.7M	$167.2M	$70.98M
Short-Term Investments	$22.74M	$20.44M	$22.74M
Other Short-Term Assets	$2.609M	$4.441M	$2.609M
YoY Change	100.69%	161.24%	100.69%
Inventory
Prepaid Expenses
Receivables	$71.00K	$190.0K
Other Receivables
Total Short-Term Assets	$169.2M	$192.3M	$169.2M
YoY Change	31.62%	41.82%	31.65%
LONG-TERM ASSETS
Property, Plant & Equipment	$6.601M	$5.427M	$19.77M
YoY Change	346.01%	719.79%	138.18%
Goodwill	$4.508M
YoY Change
Intangibles	$10.62M	$14.06M
YoY Change	-30.84%	-10.97%
Long-Term Investments	$16.21M	$16.28M	$16.21M
YoY Change
Other Assets	$890.0K	$828.0K	$890.0K
YoY Change	139.25%	1050.0%	122.5%
Total Long-Term Assets	$52.00M	$48.84M	$52.00M
YoY Change	116.21%	155.43%	115.77%
TOTAL ASSETS
Total Short-Term Assets	$169.2M	$192.3M	$169.2M
Total Long-Term Assets	$52.00M	$48.84M	$52.00M
Total Assets	$221.2M	$241.1M	$221.2M
YoY Change	44.95%	55.86%	44.93%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.872M	$3.745M	$3.872M
YoY Change	81.53%	100.16%	84.38%
Accrued Expenses	$5.064M	$4.387M	$5.339M
YoY Change	5.52%	17.8%	-13.89%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$800.0K	$3.100M	$800.0K
YoY Change	-71.43%	3.33%	-71.43%
Total Short-Term Liabilities	$10.78M	$12.60M	$10.78M
YoY Change	-8.33%	22.26%	-8.62%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$171.0K	$156.0K	$22.85M
YoY Change	56.88%		31.34%
Total Long-Term Liabilities	$171.0K	$156.0K	$22.85M
YoY Change	56.88%		31.34%
TOTAL LIABILITIES
Total Short-Term Liabilities	$10.78M	$12.60M	$10.78M
Total Long-Term Liabilities	$171.0K	$156.0K	$22.85M
Total Liabilities	$33.64M	$36.19M	$33.64M
YoY Change	15.28%	57.12%	15.2%
SHAREHOLDERS EQUITY
Retained Earnings	-$219.4M	-$198.6M
YoY Change	47.33%	47.08%
Common Stock	$407.0M	$403.5M
YoY Change	49.46%	51.31%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$187.5M	$204.9M	$187.5M
YoY Change
Total Liabilities & Shareholders Equity	$221.2M	$241.1M	$221.2M
YoY Change	44.95%	55.86%	44.93%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021
OPERATING ACTIVITIES
Net Income	-$20.76M	-$17.58M	-$70.47M
YoY Change	49.8%	117.48%	118.72%
Depreciation, Depletion And Amortization	$1.198M	$211.0K	$732.0K
YoY Change	39.3%	520.59%	542.11%
Cash From Operating Activities	-$15.81M	-$14.27M	-$59.83M
YoY Change	46.83%	54.24%	151.92%
INVESTING ACTIVITIES
Capital Expenditures	-$1.015M	-$1.324M	$5.157M
YoY Change	12.78%	327.1%	321.67%
Acquisitions
YoY Change
Other Investing Activities	-$7.162M	-$3.088M	-$43.94M
YoY Change
Cash From Investing Activities	-$8.177M	-$4.412M	-$49.10M
YoY Change	808.56%	1323.23%	3924.34%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	505.0K	20.64M	$125.8M
YoY Change	-90.1%	-79.07%	-9.04%
NET CHANGE
Cash From Operating Activities	-15.81M	-14.27M	-$59.83M
Cash From Investing Activities	-8.177M	-4.412M	-$49.10M
Cash From Financing Activities	505.0K	20.64M	$125.8M
Net Change In Cash	-23.49M	1.965M	$16.88M
YoY Change	257.47%	-97.79%	-85.11%
FREE CASH FLOW
Cash From Operating Activities	-$15.81M	-$14.27M	-$59.83M
Capital Expenditures	-$1.015M	-$1.324M	$5.157M
Free Cash Flow	-$14.80M	-$12.94M	-$64.99M
YoY Change	49.94%	44.78%	160.24%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021Q4	us-gaap	Goodwill Goodwill	4508000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	0	USD
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CY2021	vxrt	Stock Issued During Period Value Exercise Of Common Stock Warrants StockIssuedDuringPeriodValueExerciseOfCommonStockWarrants	1849000	USD
CY2021	vxrt	Stock Issued During Period Value Exercise Of Pre Funded Warrants StockIssuedDuringPeriodValueExerciseOfPreFundedWarrants	1745000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8867000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-74000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-70470000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	187531000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-18645000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	4208000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-23750000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-3285000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1823000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1800000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1108000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-855000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1626000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1207000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-70470000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-32220000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-62000	USD
CY2021	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-2209000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-579000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	2312000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-59832000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2710000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3596000	USD
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-0	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-0	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1000	USD
CY2021	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	85000	USD
CY2020	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	0	USD
CY2019	us-gaap	Investment Income Amortization Of Premium InvestmentIncomeAmortizationOfPremium	0	USD
CY2021	vxrt	Impairment Of Property And Equipment ImpairmentOfPropertyAndEquipment	0	USD
CY2020	vxrt	Impairment Of Property And Equipment ImpairmentOfPropertyAndEquipment	0	USD
CY2019	vxrt	Impairment Of Property And Equipment ImpairmentOfPropertyAndEquipment	1272000	USD
CY2021	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	3005000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	8867000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	4358000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	627000	USD
CY2021	us-gaap	Other Noncash Expense OtherNoncashExpense	0	USD
CY2020	us-gaap	Other Noncash Expense OtherNoncashExpense	0	USD
CY2019	us-gaap	Other Noncash Expense OtherNoncashExpense	88000	USD
CY2021	vxrt	Gain Loss On Merger GainLossOnMerger	3789000	USD
CY2020	vxrt	Gain Loss On Merger GainLossOnMerger	-0	USD
CY2019	vxrt	Gain Loss On Merger GainLossOnMerger	-0	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-0	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-0	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-100000	USD
CY2021	vxrt	Noncash Interest Expense On Liability NoncashInterestExpenseOnLiability	1480000	USD
CY2020	vxrt	Noncash Interest Expense On Liability NoncashInterestExpenseOnLiability	1874000	USD
CY2019	vxrt	Noncash Interest Expense On Liability NoncashInterestExpenseOnLiability	2073000	USD
CY2021	vxrt	Noncash Revenue Related To Sale Of Future Royalties NoncashRevenueRelatedToSaleOfFutureRoyalties	1098000	USD
CY2020	vxrt	Noncash Revenue Related To Sale Of Future Royalties NoncashRevenueRelatedToSaleOfFutureRoyalties	3277000	USD
CY2019	vxrt	Noncash Revenue Related To Sale Of Future Royalties NoncashRevenueRelatedToSaleOfFutureRoyalties	3482000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-263000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-13090000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5157000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1223000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	850000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2021	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	44811000	USD
CY2020	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	-0	USD
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	-0	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	5700000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	0	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-49097000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1220000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-850000	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	9175000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2540000	USD
CY2021	vxrt	Proceeds From Exercise Of Prefunded Warrants ProceedsFromExerciseOfPrefundedWarrants	0	USD
CY2020	vxrt	Proceeds From Exercise Of Prefunded Warrants ProceedsFromExerciseOfPrefundedWarrants	0	USD
CY2019	vxrt	Proceeds From Exercise Of Prefunded Warrants ProceedsFromExerciseOfPrefundedWarrants	1226000	USD
CY2021	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	1849000	USD
CY2020	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	25951000	USD
CY2019	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	180000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1745000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	602000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2021	vxrt	Proceeds From Disgorgement Of Shortswing Profits Net Of Costs ProceedsFromDisgorgementOfShortswingProfitsNetOfCosts	0	USD
CY2020	vxrt	Proceeds From Disgorgement Of Shortswing Profits Net Of Costs ProceedsFromDisgorgementOfShortswingProfitsNetOfCosts	652000	USD
CY2019	vxrt	Proceeds From Disgorgement Of Shortswing Profits Net Of Costs ProceedsFromDisgorgementOfShortswingProfitsNetOfCosts	0	USD
CY2021	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	-0	USD
CY2020	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	-0	USD
CY2019	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	3799000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	125804000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	138314000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	15960000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	16875000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	113344000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2020000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	126870000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	13526000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11506000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	143745000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	126870000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	13526000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	227000	USD
CY2021	vxrt	Issuance Of Warrants To Placement Agents Designees IssuanceOfWarrantsToPlacementAgentsDesignees	0	USD
CY2020	vxrt	Issuance Of Warrants To Placement Agents Designees IssuanceOfWarrantsToPlacementAgentsDesignees	453000	USD
CY2019	vxrt	Issuance Of Warrants To Placement Agents Designees IssuanceOfWarrantsToPlacementAgentsDesignees	100000	USD
CY2021	vxrt	Issuance Of Warrants To Underwriters Designees IssuanceOfWarrantsToUnderwritersDesignees	0	USD
CY2020	vxrt	Issuance Of Warrants To Underwriters Designees IssuanceOfWarrantsToUnderwritersDesignees	0	USD
CY2019	vxrt	Issuance Of Warrants To Underwriters Designees IssuanceOfWarrantsToUnderwritersDesignees	830000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	8395000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	5664000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1929000	USD
CY2021	vxrt	Property And Equipment Acquired As Incentive To Enter Operating Lease PropertyAndEquipmentAcquiredAsIncentiveToEnterOperatingLease	0	USD
CY2020	vxrt	Property And Equipment Acquired As Incentive To Enter Operating Lease PropertyAndEquipmentAcquiredAsIncentiveToEnterOperatingLease	87000	USD
CY2019	vxrt	Property And Equipment Acquired As Incentive To Enter Operating Lease PropertyAndEquipmentAcquiredAsIncentiveToEnterOperatingLease	0	USD
CY2021	vxrt	Leaserelated Assets And Liabilities Derecognized On Early Termination And Modification Of Leases LeaserelatedAssetsAndLiabilitiesDerecognizedOnEarlyTerminationAndModificationOfLeases	321000	USD
CY2020	vxrt	Leaserelated Assets And Liabilities Derecognized On Early Termination And Modification Of Leases LeaserelatedAssetsAndLiabilitiesDerecognizedOnEarlyTerminationAndModificationOfLeases	0	USD
CY2019	vxrt	Leaserelated Assets And Liabilities Derecognized On Early Termination And Modification Of Leases LeaserelatedAssetsAndLiabilitiesDerecognizedOnEarlyTerminationAndModificationOfLeases	0	USD
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	453000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	0	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	78000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	4000	USD
CY2021	vxrt	Proceeds Due For Sale Of Property And Equipment ProceedsDueForSaleOfPropertyAndEquipment	0	USD
CY2020	vxrt	Proceeds Due For Sale Of Property And Equipment ProceedsDueForSaleOfPropertyAndEquipment	0	USD
CY2019	vxrt	Proceeds Due For Sale Of Property And Equipment ProceedsDueForSaleOfPropertyAndEquipment	3000	USD
CY2019Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	1200000
CY2019Q1	vxrt	Gross Proceeds From Issuance Of Common Stock GrossProceedsFromIssuanceOfCommonStock	3000000.0	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2500000	USD
CY2019Q1	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	320000	USD
CY2019Q2	vxrt	Payments For Aggregate Commissions To Underwriters PaymentsForAggregateCommissionsToUnderwriters	750000	USD
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2020Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2020Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt;"><b>Use of Estimates</b> – The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and disclosure of contingent assets and liabilities in the financial statements and accompanying notes. Actual results and outcomes could differ from these estimates and assumptions.</p> <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;"> </p>
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt;"><b>Concentration of Credit Risk</b> – Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash, cash equivalents and available-for-sale investments. The Company places its cash, cash equivalents and available-for-sale investments at financial institutions that management believes are of high credit quality. The Company is exposed to credit risk in the event of default by the financial institutions holding the cash and cash equivalents to the extent such amounts are in excess of the federally insured limits. The Company has <em style="font: inherit;">not</em> experienced any losses on its deposits since inception.</p> <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;"> </p> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt;">The primary focus of the Company’s investment strategy is to preserve capital and meet liquidity requirements. The Company’s investment policy addresses the level of credit exposure by limiting the concentration in any <em style="font: inherit;">one</em> corporate issuer or sector and establishing a minimum allowable credit rating.</p> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt;"> </p>
CY2021Q4	vxrt	Investments And Cash Fair Value Disclosure InvestmentsAndCashFairValueDisclosure	182697000	USD
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt;"><b>Reclassification</b></p> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt;"> </p> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt;">Prior year data is subject to reclassification to conform to current year presentation.</p> <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;"> </p>
CY2021Q4	us-gaap	Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed	82000	USD
CY2021Q4	us-gaap	Prepaid Rent PrepaidRent	671000	USD
CY2021Q4	us-gaap	Investments And Cash InvestmentsAndCash	182771000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	74000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	143745000	USD
CY2021Q4	us-gaap	Short Term Investments ShortTermInvestments	22742000	USD
CY2021Q4	us-gaap	Long Term Investments LongTermInvestments	16210000	USD
CY2020Q4	us-gaap	Investments And Cash InvestmentsAndCash	126870000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	-0	USD
CY2020Q4	vxrt	Investments And Cash Fair Value Disclosure InvestmentsAndCashFairValueDisclosure	126870000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	126870000	USD
CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	0	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1480000	USD
CY2021	us-gaap	Depreciation Depreciation	732000	USD
CY2020	us-gaap	Depreciation Depreciation	114000	USD
CY2019	us-gaap	Depreciation Depreciation	504000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7906000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2053000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1305000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	573000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6601000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	13168000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	6838000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	10680000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	20380000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	56000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	5019000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	10624000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	15361000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1700000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1700000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2300000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1350000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1350000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1350000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1350000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1350000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	3874000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	2195000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2297000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2852000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	6770000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	18308000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	5300000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	10624000	USD
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	2786000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	1618000	USD
CY2021Q4	vxrt	Accrued Clinical And Manufacturing Expenses Current AccruedClinicalAndManufacturingExpensesCurrent	986000	USD
CY2020Q4	vxrt	Accrued Clinical And Manufacturing Expenses Current AccruedClinicalAndManufacturingExpensesCurrent	1772000	USD
CY2021Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	556000	USD
CY2020Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	777000	USD
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	736000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	632000	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	5064000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	4799000	USD
CY2021Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	0	USD
CY2020Q4	vxrt	Contract With Customer Asset Revenue Recognized ContractWithCustomerAssetRevenueRecognized	219000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	13000	USD
CY2021	vxrt	Revaluation Gain Recognized RevaluationGainRecognized	3800000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0927	pure
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y11M4D
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	2071000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	2123000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	13008000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1011000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	11997000	USD
CY2021Q3	vxrt	Lessee Finance Lease Number Of Leases LesseeFinanceLeaseNumberOfLeases	0	pure
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	2513000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	1145000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	959000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	340000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	13000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	15000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	1233000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	264000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	162000	USD
CY2021	us-gaap	Sublease Income SubleaseIncome	36000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	217000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	217000	USD
CY2021	us-gaap	Lease Cost LeaseCost	4050000	USD
CY2020	us-gaap	Lease Cost LeaseCost	1205000	USD
CY2019	us-gaap	Lease Cost LeaseCost	919000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	4400000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	1100000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	983000	USD
CY2019Q4	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	98000	USD
CY2019Q4	us-gaap	Legal Fees LegalFees	2000	USD
CY2021Q4	us-gaap	Purchase Obligation PurchaseObligation	11000000.0	USD
CY2021Q4	vxrt	Lessee Operating Lease Lease Not Yet Commenced LesseeOperatingLeaseLeaseNotYetCommenced	14900000	USD
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2021	us-gaap	Dividends Dividends	0	USD
CY2021Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	232434
CY2021Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	16031282
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	9288870
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	200650
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	865163
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.13
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	1600000
CY2019	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Removed From Plan ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesRemovedFromPlan	223389
CY2019	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Shares Available For Grant Decrease From Grants ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesAvailableForGrantDecreaseFromGrants	1791030
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1791030
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.67
CY2019	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Forfeited ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeited	483849
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	592528
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	1.57
CY2019	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Canceled ShareBasedCompensationArrangementByShareBasedPaymentAwardCanceled	25100
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	252013
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	9.25
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	295180
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1811652
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	2.74
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	6400000
CY2020	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Shares Available For Grant Decrease From Grants ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesAvailableForGrantDecreaseFromGrants	5579800
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	5579800
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.66
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	414676
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	1.45
CY2020	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Forfeited ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeited	105910
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	105992
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	1.65
CY2020	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Canceled ShareBasedCompensationArrangementByShareBasedPaymentAwardCanceled	9573
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	57751
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	10.57
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1230863
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6813033
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	2.70
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	8900000
CY2021	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Shares Available For Grant Decrease From Grants ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesAvailableForGrantDecreaseFromGrants	5178438
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	5178438
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	7.09
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1070921
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	1.63
CY2021	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Forfeited ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeited	630317
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	650054
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	3.16
CY2021	vxrt	Share Based Compensation Arrangement By Share Based Payment Award Canceled ShareBasedCompensationArrangementByShareBasedPaymentAwardCanceled	0
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	54390
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	11.98
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	5582742
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	10216106
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	4.96
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	10216106
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	4.96
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y8M1D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	18700000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	9577757
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	4.85
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P8Y7M13D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	18400000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3743237
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	2.71
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P7Y7M13D
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	14200000	USD
CY2021Q4	us-gaap	Share Price SharePrice	6.27
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1700000	USD
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1070921
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	6200000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	602000	USD
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	414676
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2200000	USD
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0
CY2021	vxrt	Restructuring Charges Reversals RestructuringChargesReversals	0	USD
CY2021Q4	us-gaap	Restructuring And Related Cost Cost Incurred To Date1 RestructuringAndRelatedCostCostIncurredToDate1	4071000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	0	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	4920000	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	1272000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	3648000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	490000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	122000	USD
CY2020	vxrt	Restructuring Reversals Of Expenses RestructuringReversalsOfExpenses	971000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	2799000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	0	USD
CY2021Q4	us-gaap	Restructuring Reserve RestructuringReserve	0	USD
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.03	pure
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	288000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	96000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	140000	USD
CY2021	us-gaap	Defined Contribution Plan Administrative Expenses DefinedContributionPlanAdministrativeExpenses	14000	USD
CY2020	us-gaap	Defined Contribution Plan Administrative Expenses DefinedContributionPlanAdministrativeExpenses	10000	USD
CY2019	us-gaap	Defined Contribution Plan Administrative Expenses DefinedContributionPlanAdministrativeExpenses	14000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	106000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	235000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	488000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	107000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	238000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	107000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	238000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	490000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	30256000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	14161000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	6924000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	4923000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	2497000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	1591000	USD
CY2021Q4	vxrt	Deferred Tax Assets Capitalized Research And Development DeferredTaxAssetsCapitalizedResearchAndDevelopment	4016000	USD
CY2020Q4	vxrt	Deferred Tax Assets Capitalized Research And Development DeferredTaxAssetsCapitalizedResearchAndDevelopment	4534000	USD
CY2019Q4	vxrt	Deferred Tax Assets Capitalized Research And Development DeferredTaxAssetsCapitalizedResearchAndDevelopment	4773000	USD
CY2021Q4	vxrt	Deferred Tax Assets Sale Of Future Royalty Rights DeferredTaxAssetsSaleOfFutureRoyaltyRights	5826000	USD
CY2020Q4	vxrt	Deferred Tax Assets Sale Of Future Royalty Rights DeferredTaxAssetsSaleOfFutureRoyaltyRights	7178000	USD
CY2019Q4	vxrt	Deferred Tax Assets Sale Of Future Royalty Rights DeferredTaxAssetsSaleOfFutureRoyaltyRights	7486000	USD
CY2021Q4	vxrt	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	3184000	USD
CY2020Q4	vxrt	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	1695000	USD
CY2019Q4	vxrt	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	492000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3043000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1327000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1253000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	51248000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	31392000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	22519000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	42589000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	21952000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	13365000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	8659000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	9440000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	9154000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	5410000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	7832000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	8730000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	3223000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	1608000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	424000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	26000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1300000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	1.942	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	0	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	0.005	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	-2.083	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.006	pure
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	-0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	-0	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	8659000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9440000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9154000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.040	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.004	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.003	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.007	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.026	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.002	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.022	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.037	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.034	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.028	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.017	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.293	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.268	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.025	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.009	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.045	pure
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.001	pure
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.007	pure
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.027	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2021	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	20600000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	8600000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-35300000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2400000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1281000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	851000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1582000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1132000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	431000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	159000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	9000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	890000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2422000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1281000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	851000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-70470000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-32220000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-18645000	USD
CY2021	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	121453723
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	88295762
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	21569523
CY2021	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.58
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.36
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.86
CY2021	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	8575180
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	19183231
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	19163520
CY2021Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	506000	USD
CY2021Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	112000	USD
CY2021Q4	us-gaap	Operating Expenses OperatingExpenses	24289000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	-16007000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	-16116000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-17583000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	-20764000	USD
CY2021Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	200000	USD
CY2021Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	74000	USD
CY2021Q1	us-gaap	Operating Expenses OperatingExpenses	16017000	USD
CY2021Q2	us-gaap	Operating Expenses OperatingExpenses	15887000	USD
CY2021Q3	us-gaap	Operating Expenses OperatingExpenses	17451000	USD
CY2021Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.14
CY2021Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.13
CY2021Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.14
CY2021Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.17
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2902000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	523000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	265000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	356000	USD
CY2020Q1	us-gaap	Operating Expenses OperatingExpenses	3596000	USD
CY2020Q2	us-gaap	Operating Expenses OperatingExpenses	9049000	USD
CY2020Q3	us-gaap	Operating Expenses OperatingExpenses	7854000	USD
CY2020Q4	us-gaap	Operating Expenses OperatingExpenses	13717000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-1297000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-8977000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-8085000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-13861000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.02
CY2020Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.12
CY2020Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.08
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CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	5407000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	85000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	454000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3916000	USD
CY2019Q1	us-gaap	Operating Expenses OperatingExpenses	5855000	USD
CY2019Q2	us-gaap	Operating Expenses OperatingExpenses	5082000	USD
CY2019Q3	us-gaap	Operating Expenses OperatingExpenses	5168000	USD
CY2019Q4	us-gaap	Operating Expenses OperatingExpenses	9542000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-1339000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-5637000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-5260000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-6409000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.18
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.39
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.32
CY2019Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.13

Files In Submission

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$VXRT
Vaxart, Inc. Stock $vxrt

2021 Q4 Form 10-K Financial Statement

#000143774922004354 Filed on February 24, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$VXRT Vaxart, Inc. Stock $vxrt

2021 Q4 Form 10-K Financial Statement

#000143774922004354 Filed on February 24, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$VXRT
Vaxart, Inc. Stock $vxrt