Document And Entity Information
Expected dividend yield
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Note To Financial Statement Details Textual
Significant Accounting Policies
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]
Note 2 - Summary of Significant Accounting Policies
Expected benefit
Note 3 - Investments
Risk-free interest rates
Note 4 - Leases
Note 5 - Property and Equipment, Net
Note 6 - Fair Value Measurement
Note 8 - Stockholders' Equity
Lessee, Operating and Finance Leases Disclosure [Text Block]
The entire disclosure for operating and finance leases of lessee.
Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans
astc_IncreaseDecreaseInOperatingLeaseRightofuseAssets
Increase (Decrease) in Operating Lease, Right-of-Use Assets
The increase (decrease) during the reporting period in operating lease, right-of-use assets.
Note 11 - Income Taxes
Income Tax Disclosure [Text Block]
Note 12 - Net Loss Per Share
Note 2 - Summary of Significant Accounting Policies - Summary of Warranty Provision (Details)
Net unrealized losses, net of zero tax expense
Note 3 - Investments - Schedule of Investments (Details)
Note 4 - Leases - Schedule of Balance Sheet Presentation of Operating and Finance Leases (Details)
Expected volatility
Note 4 - Leases - Schedule of Future Minimum Lease Payments (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
Note 4 - Leases - Schedule of Other information (Details)
Note 5 - Property and Equipment, Net - Schedule of Property and Equipment (Details)
Austin, Texas [Member]
Information related to Austin, Texas.
Note 6 - Fair Value Measurement - Schedule of Fair Value Measurement of Financial Instruments (Details)
Available-for-sale securities
Note 8 - Stockholders' Equity - Schedule of Warrant Activity (Details)
Expected option life (in years) (Year)
Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans - Stock Option Activity Summary (Details)
Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans - Stock Options Outstanding (Details)
Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans Compensation - Restricted Stock Activity (Details)
Note 10 - Common Stock Incentive, Stock Purchase Plans, and Other Compensation Plans - Schedule of Share-based Compensation Fair Value (Details)
Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]
astc_OperatingAndFinanceLeasesRightofuseAssets
Total lease assets
Amount of the lessee's operating and finance lease, right-of-use assets.
Note 11 - Income Taxes - Schedule of Components of Income Tax Benefit (Details)
Assets:
Lessee's operating and finance lease, right-of-use assets.
Note 11 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
Liabilities:
Lessee's operating and finance lease, liabilities.
Note 11 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)
astc_OperatingAndFinanceLeasesLiabilities
Total lease liabilities
Amount of the lessee's operating and finance lease liabilities.
Note 11 - Income Taxes - Rollforward of Beginning and Ending Amount of Unrecognized Tax Benefits (Details)
Note 12 - Net Loss Per Share - Schedule of Basic and Diluted Earnings Per Share (Details)
Research And Development Facility [Member]
Represents lease for a research and development facility.
Notes To Financial Statements
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Notes To Financial Statements [Abstract]
Lessee, Operating and Financing Leases, Liability, Maturity [Table Text Block]
Tabular disclosure of undiscounted cash flows of lessee's operating and finance lease liabilities. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.
Granted (in dollars per share)
Granted, weighted average grant date fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Vested, weighted average grant date fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Canceled or expired (in dollars per share)
us-gaap_GainLossOnTerminationOfLease
Disposal of corporate lease
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Outstanding, weighted average grant date fair value (in dollars per share)
Outstanding, weighted average grant date fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Canceled or expired (in shares)
Schedule of Balance Sheet Presentation of Operating and Finance Leases [Table Text Block]
Tabular disclosure of the balance sheet presentation of the operating and finance leases.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Outstanding (in shares)
Outstanding (in shares)
2023
Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
2024
Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
2025
Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested (in shares)
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Less: imputed interest
Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating and finance leases.
Present value of net minimum lease obligations
Present value of lessee's discounted obligation for lease payments from operating and finance leases.
Less: lease liabilities - current
Present value of lessee's discounted obligation for lease payments from operating and finance leases, classified as current.
Lease liabilities - non-current
Present value of lessee's discounted obligation for lease payments from operating and finance leases, classified as non-current.
2026
Amount of lessee's undiscounted obligation for lease payment for operating and finance leases to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
Thereafter
Amount of lessee's undiscounted obligation for lease payment for operating and finance leases due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value
astc_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue
Total lease obligations
Amount of lessee's undiscounted obligation for lease payment for operating and finance leases.
Furniture, Fixtures, Equipment, and Leasehold Improvements [Member]
Represents furniture, fixtures, equipment & leasehold improvements.
Issued (in shares)
Number of warrants or rights issued.
Lessee, Operating and Finance Leases, Weighted Average Lease Term And Discount Rate [Table Text Block]
Tabular disclosure for lessee's operating and finance leases weighted average lease term and discount rate.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
astc_LeaseholdImprovementAssetsNetWriteoff
Leasehold Improvement Assets, Net, Write-off
Amount of leasehold improvement assets that have been written off.
Weighted-average grant-date fair value of options awarded (in dollars per share)
Outstanding, Aggregate Fair Market Value
Represents the aggregate fair market value of outstanding warrants or rights.
Issued
The weighted average fair value for warrants or rights issued during the period.
Issued (in dollars per share)
Exercise price per share or per unit of warrants or rights issued.
us-gaap_PaymentsToAcquireMarketableSecurities
Purchases of security investments
Class of Warrant or Rights, Warrants Issued March 26, 2020 [Member]
Represents the date the warrants or rights were issued.
Financial Instruments [Domain]
Class of Warrant or Rights, Warrants Issued March 30, 2020 [Member]
Represents the date the warrants or rights were issued.
Class of Warrant or Rights, Warrants Issued October 23, 2020 [Member]
Represents the date the warrants or rights were issued.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Outstanding, weighted average grant date fair value (in dollars per share)
Outstanding, weighted average grant date fair value (in dollars per share)
Outstanding, Weighted Average Remaining Contractual Term (Year)
Weighted average remaining contractual term of outstanding warrants or rights.
astc_PercentOfDeferredPayrollTaxAmountPaid
Percent of Deferred Payroll Tax Amount Paid
Percent of total deferred payroll tax liability paid as of reporting date.
Canceled or expired, weighted average grant date fair value (in dollars per share)
astc_NumberOfRepaymentInstallments
Number of Repayment Installments
The number of installments anticipated to repay the deferred payroll tax liability.
Financial Instrument [Axis]
Granted, weighted average grant date fair value (in dollars per share)
Exercised, weighted average grant date fair value (in dollars per share)
Class of Warrant or Rights, Warrants Issued October 28, 2020 [Member]
Represents the date the warrants or rights were issued.
Class of Warrant or Rights, Warrants Issued February 16, 2021 [Member]
Represents the date the warrants or rights were issued.
Payroll related accruals
Class of Warrant or Rights, Warrants Issued April 12, 2021 [Member]
Represents the date the warrants or rights were issued.
Income tax payable
Secured Promissory Note, (2020 Note) [Member]
Represents the private placement transaction for the issuance and sale of a secured promissory note.
Accounts payable
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding (in shares)
Outstanding (in shares)
Secured Promissory Note (2019 Note) [Member]
Represents the private placement transaction for the issuance and sale of a secured promissory note.
Chief Executive Officer and Board of Directors Chairman, Thomas B. Pickens III [Member]
Information on related party transactions.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod
Canceled or expired (in shares)
astc_NumberOfCustomers
Number Of Customers
Represents the number of customers.
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)
Unusual or Infrequent Items, or Both, Disclosure [Text Block]
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of property and equipment
astc_EquitySecuritiesNoticeOfDeficiencyFailureToMaintainMinimumBidPriceAmount
Equity Securities, Notice of Deficiency, Failure to Maintain Minimum Bid Price, Amount (in dollars per share)
Represents the minimum bid price required by NASDAQ.
astc_EquitySecuritiesThresholdConsecutiveTradingDays
Equity Securities, Threshold Consecutive Trading Days (Day)
Represents the threshold period of specified consecutive trading days.
Acquisition of equipment through finance lease
Exercise Price Range 1 [Member]
Represents exercise range 1.
Exercise Price Range 2 [Member]
Represents exercise price range 2.
Weighted average common shares outstanding:
astc_EquitySecuritiesMinimumClosingBid
Equity Securities, Minimum Closing Bid Price (in dollars per share)
Represents the minimum bid price required by NASDAQ.
Current liabilities
us-gaap_IncreaseDecreaseInOperatingLeaseLiability
Increase (Decrease) in Operating Lease Liability
Exercise Price Range 3 [Member]
Represents exercise price range 3.
us-gaap_Assets
Total assets
Plan Name [Axis]
Plan Name [Domain]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
Compensation and Employee Benefit Plans [Text Block]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
Investment [Text Block]
Secured Promissory Notes, "Original Notes" [Member]
Represents a private placement transaction for the issuance and sale of the 2019 and 2020 secured promissory notes (Original Notes).
Share-Based Payment Arrangement [Text Block]
Business Description and Basis of Presentation [Text Block]
Award Type [Domain]
Award Type [Axis]
Net loss
Net loss
Net loss
Net loss
Restricted Stock [Member]
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Commitments and Contingencies Disclosure [Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Accumulated depreciation and amortization
Property and equipment, net
Property and equipment, net
Property Plant And Equipment, Gross
Cash flows from investing activities:
Debt Securities, Available-for-sale
Debt Securities, Available-for-sale, Fair Value
us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet
Other assets and liabilities
Earnings Per Share [Text Block]
Income tax benefit
Total tax benefit
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
Net unrealized losses, tax expense
us-gaap_OperatingExpenses
Total operating expenses
Cash and cash equivalents
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
us-gaap_DefinedBenefitPlanContributionsByEmployer
Defined Benefit Plan, Plan Assets, Contributions by Employer
Amendment Flag
Other comprehensive loss, net of tax:
us-gaap_ComprehensiveIncomeNetOfTax
Total comprehensive loss
City Area Code
Use of Estimates, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures
Cancelation of restricted stock
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Common stock, shares outstanding (in shares)
Preferred stock, shares outstanding (in shares)
Current Fiscal Year End Date
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Operating leases
Document Fiscal Period Focus
Document Fiscal Year Focus
Consolidation, Policy [Policy Text Block]
Document Period End Date
Operating right-of-use assets and associated liabilities
Operating leases (Year)
Entity File Number
Entity Emerging Growth Company
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Document Type
us-gaap_GainsLossesOnExtinguishmentOfDebt
Gain from extinguishment of debt - PPP loan
Entity Small Business
us-gaap_NumberOfCountriesInWhichEntityOperates
Number of Countries in which Entity Operates
Entity Shell Company
astc_NumberOfLocationsUsingTracer1000
Number of Locations using TRACER 1000
Number of locations where TRACER 1000 is deployed.
Document Information [Line Items]
astc_NumberOfCountriesUsingTracer1000
Number of Countries using TRACER 1000
Number of countries where TRACER 1000 is deployed.
Document Information [Table]
Purchased Software [Member]
Represents purchased software.
us-gaap_AreaOfRealEstateProperty
Area of Real Estate Property (Square Foot)
Secured Promissory Note, "Amended Notes" [Member]
Represents the amended notes.
Entity Public Float
Entity Filer Category
Debt Instrument [Axis]
Entity Current Reporting Status
Debt Instrument, Name [Domain]
Entity Voluntary Filers
Entity Well-known Seasoned Issuer
astc_PercentageOfSharesSoldInOffering
Percentage of Shares Sold in Offering
Represents the percentage of shares sold in offering.
astc_PercentageOfPerShareOfferingPriceOfShares
Percentage of Per Share Offering Price of Shares
Represents percentage of per share offering price of shares.
Paycheck Protection Program Promissory Note [Member]
Represents paycheck protection program promissory note.
us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Impairment, Long-Lived Asset, Held-for-Use, Total
astc_CommonStockIssuableAggregateOfferingPrice
Common Stock Issuable, Aggregate Offering Price
Represents the aggregate offering price of common stock issuable.
astc_SharesIssuedWeightedAveragePricePerShare
Shares Issued, Weighted Average Price Per Share (in dollars per share)
Represents the weighted average price per share if shares issued.
us-gaap_IncreaseDecreaseInIncomeTaxesReceivable
Income tax receivable
The “Public Offering Shares” [Member]
Represents the "Public Offering Shares".
astc_ClassOfWarrantOrRightFairValuePrice
Class of Warrant or Right, Fair Value Price (in dollars per share)
Represents the fair value of warrants or rights.
astc_PercentageOfUnderwritingDiscountPricePerShare
Percentage of Underwriting Discount, Price Per Share
Represents the percentage of underwriting discount for price per share.
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Underwritten Public Offering [Member]
Represents the underwritten public offering.
Entity Tax Identification Number
Loss on impairment of long-lived assets
Impairment of Long-Lived Assets to be Disposed of
astc_StockIssuedDuringPeriodOptionToPurchaseAdditionalSharesTerm
Stock Issued During Period, Option to Purchase Additional Shares, Term (Day)
Represents the term length from time of issuance to execute options for the purchase of additional shares.
Entity Central Index Key
us-gaap_DepreciationAndAmortization
Depreciation, Depletion and Amortization, Nonproduction, Total
The “February Registered Offering” [Member]
Represents the February registered offering.
Entity Registrant Name
The “Placement Agent’s Warrants No. 3” [Member]
Represents the placement agents warrants number 3.
HCWainwrightCoLLC [Member]
Represents HCWainwright & Co, LLC.
The “Underwriter Warrants” [Member]
Represents the underwriter warrants.
Entity [Domain]
The “Placement Agent’s Warrants No. 1” [Member]
Represents the placement agents warrants no.1.
Customer Concentration Risk [Member]
Legal Entity [Axis]
The “October Registered Offering” [Member]
Represents the October registered offering.
The “Placement Agent’s Warrants No. 2” [Member]
Represents the placement agents number 2 warrants.
Entity Address, Address Line One
Issued (Year)
Represents the weighted average remaining contractual term for warrants issued in the period.
Entity Address, City or Town
Entity Address, Postal Zip Code
The “Wainwright ATM Agreement” [Member]
Represents the Wainwright ATM agreement.
Supplemental disclosures of cash flow information:
Entity Address, State or Province
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
Loan forgiveness - PPP loan
Represents the effective income tax reconciliation for the paycheck protection program (PPP) loan forgiveness.
Lease liability - current and non-current
Deferred tax assets lease liability
Entity Common Stock, Shares Outstanding
Issuance of shares, net of offering issuance costs of $5,685
Omnibus Equity Plan, 2021 [Member]
Represents the Omnibus equity plan of 2021.
astc_SharebasedCompensationArrangementBySharebasedPaymentAwardSharesIssuableInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issuable in Period (in shares)
Number of shares that are issuable under share-based payment arrangement.
Expiration of net operating loss carryovers
Represents the income tax reconciliation for expiring net operating loss carryforwards.
Revenue Benchmark [Member]
us-gaap_IncreaseDecreaseInInventories
Inventory, net
Trading Symbol
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Local Phone Number
Exercised (in shares)
us-gaap_TableTextBlock
Notes Tables
us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited
Cancelation of restricted stock (in shares)
Related Party [Axis]
Related Party [Domain]
Stock-based compensation (in shares)
Class Of Warrant Or Right, Expiration Date
Selling, general and administrative
Stock-based compensation
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Granted (in shares)
Granted (in shares)
Granted (in shares)
us-gaap_StockIssuedDuringPeriodSharesNewIssues
Stock Issued During Period, Shares, New Issues (in shares)
Raw materials
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ equity
Finished goods
Work-in-process
Reported Value Measurement [Member]
Issuance of shares, net of offering issuance costs of $5,685
us-gaap_StockIssuedDuringPeriodValueNewIssues
us-gaap_IncreaseDecreaseInContractWithCustomerAsset
Cost and estimated revenue in excess of billings
Research and development
Research and Development Expense, Total
Accumulated deficit
Accumulated other comprehensive loss
astc_TaxCutsAndJobsActOf2017LimitsOnUtilizationOfNetOperatingLossToTaxableIncomePercentage
Tax Cuts and Jobs Act of 2017, Limits on Utilization of Net Operating Loss to Taxable Income Percentage
Tax cuts and jobs act of 2017 limits on utilization of net operating loss to taxable income percentage.
Debt Disclosure [Text Block]
astc_UnrecognizedTaxBenefitsResultingInNetStateOperatingLossCarryforwards
Unrecognized Tax Benefits Resulting in Net State Operating Loss Carryforwards
Represents the unrecognized tax benefits resulting in net state operating loss carryforwards.
us-gaap_InterestExpense
Interest Expense, Total
astc_UnrecognizedTaxEffectOnTexasBusinessLossCarryforwards
Unrecognized Tax Effect on Texas Business Loss Carryforwards
Represents the unrecognized tax effect on Texas business loss carryforwards.
astc_InterestExpenseForUncertainTaxPositions
Interest Expense For Uncertain Tax Positions
Interest expense for uncertain tax positions.
astc_FederalOperatingLossCarryforwardsAvailable
Federal Operating Loss Carryforwards Available
Federal Operating Loss Carryforwards Available
Changes in assets and liabilities:
astc_UnrecognizedTaxBenefitsResultingInNetOperatingLossCarryforwardOne
Unrecognized Tax Benefits Resulting in Net Operating Loss Carryforward One
Amount of an unrecognized tax benefit that is directly related to a position taken in a tax year that results in a net operating loss carryforward. This amount is presented as a reduction of the related deferred tax asset in the balance sheet if that deferred tax asset is not used. This amount is presented separately from the deferred tax asset for a net operating loss carryforward if this unrelated tax benefit is associated with a different tax position.
Indefinite Lives [Member]
represents indefinite lives.
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Subsequent Event [Member]
us-gaap_OperatingLeaseLiabilityNoncurrent
Operating lease obligations
2027
Amount of lessee's undiscounted obligation for lease payment for operating and finance leases due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
Corporate & Government Debt Mutual Funds Securities [Member]
Represents Corporate & Government Debt Mutual Funds Securities.
Corporate & Government Debt ETFs Securities [Member]
Represents Corporate & Government Debt ETFs Securities.
us-gaap_OperatingLeaseLiability
Present value of net minimum lease obligations
Subsequent Event Type [Axis]
Operating lease obligations
Less: lease liabilities - current, Operating Leases
Subsequent Event Type [Domain]
Financing lease obligations
Less: lease liabilities - current, Financing Leases
us-gaap_FinanceLeaseLiabilityNoncurrent
Financing lease obligations
Subsequent Events [Text Block]
Operating lease assets
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease obligations, Operating Leases
us-gaap_FinanceLeasePrincipalPayments
Finance Lease, Principal Payments
Repayments on lease financing
Less: imputed interest, Operating Leases
us-gaap_FinanceLeaseLiability
Present value of net minimum lease obligations, Financing Leases
us-gaap_DeferredIncomeTaxExpenseBenefit
Total deferred tax benefit
2025, Operating Leases
2026, Operating Leases
Financing lease assets
2027, Operating Leases
Thereafter, Operating Leases
Fair Value of Financial Instruments, Policy [Policy Text Block]
2023, Operating Leases
Debt Securities, Available-for-Sale [Table Text Block]
2024, Operating Leases
Foreign Currency Transactions and Translations Policy [Policy Text Block]
us-gaap_ShareBasedCompensation
Stock-based compensation
Other assets, net
Lessee, Leases [Policy Text Block]
Earnings Per Share, Policy [Policy Text Block]
us-gaap_Revenues
Revenues, Total
Operating expenses:
Income Tax, Policy [Policy Text Block]
us-gaap_LesseeOperatingLeaseTermOfContract
Lessee, Operating Lease, Term of Contract (Month)
Research and Development Expense, Policy [Policy Text Block]
Depreciation and amortization
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
us-gaap_AssetsCurrent
Total current assets
Share-Based Payment Arrangement [Policy Text Block]
Stockholders' Equity Note Disclosure [Text Block]
Common stock, $0.001 par value, 250,000,000 and 50,000,000 shares authorized at June 30, 2022 and 2021 respectively; 50,567,864 and 49,450,558 shares issued and outstanding at June 30, 2022 and 2021, respectively
Adjustments to reconcile net loss from operations to net cash used in operating activities:
Common stock, shares authorized (in shares)
Common stock, shares issued (in shares)
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Stockholders' Equity, Policy [Policy Text Block]
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
Standard Product Warranty, Policy [Policy Text Block]
us-gaap_DeferredTaxAssetsValuationAllowance
Less — valuation allowance
us-gaap_OperatingLeasePayments
Operating Lease, Payments
Statistical Measurement [Domain]
Maximum [Member]
us-gaap_DeferredTaxAssetsNet
Net deferred tax assets
Statistical Measurement [Axis]
Cost and estimated revenue in excess of billings
Convertible preferred stock, $0.001 par value, 2,500,000 shares authorized; 280,898 shares of Series D issued and outstanding at June 30, 2022 and 2021
Net deferred tax assets
Preferred stock, shares issued (in shares)
Preferred Stock, Shares Issued, Total (in shares)
Cash paid for interest
Interest Paid, Excluding Capitalized Interest, Operating Activities
Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]
Geographical [Axis]
Property, Plant and Equipment Disclosure [Text Block]
Geographical [Domain]
Property, Plant and Equipment [Table Text Block]
us-gaap_DeferredTaxAssetsGross
Total gross deferred tax assets
Preferred stock, shares authorized (in shares)
us-gaap_DeferredIncomeTaxLiabilities
Total gross deferred tax liabilities
Portion at Fair Value Measurement [Member] [Default]
us-gaap_PreferredStockConversionBasis
Preferred Stock, Conversion Basis
Preferred stock, par value (in dollars per share)
Estimate of Fair Value Measurement [Member]
Revenue
Measurement Basis [Axis]
Fair Value, Inputs, Level 3 [Member]
us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Foreign Currency Transaction Gain (Loss), before Tax, Total
Fair Value Hierarchy and NAV [Domain]
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 2 [Member]
Property and equipment, principally due to differences in depreciation
Fair Value Hierarchy and NAV [Axis]
Accrued expenses and other timing
Software and Software Development Costs [Member]
Inventory, net:
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life (Year)
Construction in Progress [Member]
Cash flows from operating activities:
Revenue [Policy Text Block]
Statement [Line Items]
us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accounts Receivable, Allowance for Credit Loss, Current
Accounts receivable
us-gaap_StandardProductWarrantyAccrual
Balance
Balance
us-gaap_StandardProductWarrantyAccrualPayments
Settlements made
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Stock-based compensation
Additional paid-in capital
Warranty claims provided for
Short-term investments
AOCI Attributable to Parent [Member]
Schedule of Product Warranty Liability [Table Text Block]
Stockholders’ equity
Property, Plant and Equipment, Policy [Policy Text Block]
us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax
Long-Lived Tangible Asset [Axis]
us-gaap_NonoperatingIncomeExpense
Other income and (expense), net
Segment Reporting Disclosure [Text Block]
Long-Lived Tangible Asset [Domain]
Tax credit carryforwards
Net operating loss carryforwards
us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
Deferred Tax Assets, Operating Loss Carryforwards, State and Local
Current assets
Fair Value Disclosures [Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Inventory, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net change in cash and cash equivalents
Deferred tax assets:
Over-Allotment Option [Member]
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash (used in) provided by financing activities
us-gaap_Liabilities
Total liabilities
Commitments and contingencies (Note 14)
Sale of Stock [Axis]
Sale of Stock [Domain]
us-gaap_OperatingIncomeLoss
Loss from operations
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
us-gaap_DeferredTaxLiabilities
Deferred Tax Liabilities, Net, Total
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
Prepaid expenses and other current assets
Cost of revenue
us-gaap_GrossProfit
Gross profit
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
us-gaap_DeferredTaxLiabilitiesLeasingArrangements
Right-of-use assets
Investment, Policy [Policy Text Block]
Stock offering issuance cost
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Property and equipment, principally due to differences in depreciation
Deferred tax liabilities:
us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Proceeds from Issuance or Sale of Equity, Total
Retained Earnings [Member]
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Current State and Local Tax Expense (Benefit)
Proceeds from issuance of stock, net of offering issuance costs
Treasury Stock [Member]
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State and local
Additional Paid-in Capital [Member]
Common Stock [Member]
us-gaap_CurrentFederalTaxExpenseBenefit
Federal
Preferred Stock [Member]
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Equity Components [Axis]
Equity Component [Domain]
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current tax benefit
Class Of Warrant Or Right, Exercise Price (in dollars per share)
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
Outstanding, Weighted Average Exercise Price (in dollars per share)
Outstanding, Weighted Average Exercise Price (in dollars per share)
Class of Warrant or Right [Axis]
Class of Warrant or Right [Domain]
us-gaap_NotesPayable
Notes Payable, Total
Class Of Warrant Or Right, Outstanding (in shares)
Outstanding (in shares)
Outstanding (in shares)
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total
Loss from operations before income taxes
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)
ICFR Auditor Attestation Flag
Income Tax Authority [Axis]
Lease liabilities, net of current portion
Present value of lessee's discounted obligation for lease payments from operating and finance lease, classified as noncurrent.
Income Tax Authority [Domain]
Domestic Tax Authority [Member]
Lease liabilities, current
Present value of lessee's discounted obligation for lease payments from operating and finance leases, classified as current.
Document Annual Report
us-gaap_RepaymentsOfRelatedPartyDebt
Repayment of related party debt
Cash and Cash Equivalents, Policy [Policy Text Block]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Receivable [Policy Text Block]
Entity Incorporation, State or Country Code
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits, Ending Balance
Balance
Balance
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
Document Transition Report
Concentration Risk Disclosure [Text Block]
Entity Interactive Data Current
Additions for tax positions of prior years
Security Exchange Name
Decreases for tax positions of prior years
Additions for tax positions of current period
Title of 12(b) Security
Office Building [Member]
Tax Period [Domain]
Auditor Name
Accrued expenses and other liabilities
Tax Period [Axis]
Auditor Location
Auditor Firm ID
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)
us-gaap_ProceedsFromNotesPayable
Proceeds from Notes Payable, Total
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
us-gaap_OperatingLossCarryforwardsValuationAllowance
Operating Loss Carryforwards, Valuation Allowance
Statement [Table]
Term note payable - related party
Statement of Financial Position [Abstract]
Basic and diluted (in shares)
Denominator for basic and diluted net loss per share — weighted average common stock outstanding (in shares)
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective Income Tax Rate Reconciliation, Percent, Total
Basic and diluted net loss per common share: (in dollars per share)
Net loss (in dollars per share)
Statement of Cash Flows [Abstract]
Statement of Stockholders' Equity [Abstract]
Income Statement [Abstract]
us-gaap_RepaymentsOfDebt
Repayments of Debt
us-gaap_FinanceLeaseLiabilityPaymentsDue
Total lease obligations, Financing Leases
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
2027, Financing Leases
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Thereafter, Financing Leases
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Less: imputed interest, Financing Leases
2023, Financing Leases
2024, Financing Leases
2025, Financing Leases
2026, Financing Leases
Financing leases
Financing leases (Year)
Cash flows from financing activities:
Other permanent items
us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Prior year true-up
Change in valuation allowance
us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount
Stock-based compensation
Series D Preferred Stock [Member]
us-gaap_StockholdersEquity
Total stockholders’ equity
Balance
Balance
Property and Equipment, Net [Member]
Represents Property and Equipment, Net.
Lease Liabilities, Current [Member]
Represents lease liabilities current.
Class of Stock [Axis]
Class of Stock [Domain]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Lease Liabilities, Noncurrent [Member]
Represents noncurrent lease liabilities.
us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Debt Securities, Available-for-sale, Unrealized Loss
Outstanding, Weighted Average Exercise Price (in dollars per share)
Debt Securities, Available-for-sale, Unrealized Gain
Weighted average remaining contractual lifeWeighted average remaining contractual life (Year)
Shares Exercisable (in shares)
Exercisable, Weighted Average Exercise Price (in dollars per share)
astc_NumberofAdditionalPatentsInProcess
Number of Additional Patents In Process
Represents the number of additional patents in process.
Outstanding, exercise prices range upper (in dollars per share)
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)
astc_NumberofWhollyOwnedSubsidiaries
Number of Wholly Owned Subsidiaries
Represents the number of subsidiaries to which ATI licenses AMS Technology.
Tax credits
Debt Securities, Available-for-sale, Adjusted Cost
Number outstanding (in shares)
Exercise Price Range [Axis]
Exercise Price Range [Domain]
astc_NumberofPatentsGranted
Number of Patents Granted
Represents the number of patents granted.
Outstanding, exercise prices range lower limit (in dollars per share)
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)