XML 51 R40.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Note 5 - Stockholders' Equity - Schedule of Warrant Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Jun. 30, 2023
Outstanding (in shares) | 80 |
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 72.1 |
Outstanding, Aggregate Fair Market Value | $ 3,747 | $ 3,747
Outstanding, Weighted Average Remaining Contractual Term (Year) | 1 year 10 months 6 days | 2 years 7 months 6 days
Warrants issued (in shares) | 0 |
Warrants issued, Weighted Average Exercise Price (in dollars per share) | $ 0 |
Warrants issued, Aggregate Fair Market Value | $ 0 |
Warrants exercised (in shares) | 0 |
Warrants exercised, Weighted Average Exercise Price (in dollars per share) | $ 0 |
Warrants exercised, Aggregate Fair Market Value | $ 0 |
Warrants expired (in shares) | 0 |
Warrants expired,Weighted Average Exercise Price (in dollars per share) | $ 0 |
Warrants expired, Aggregate Fair Market Value | $ 0 |
Outstanding (in shares) | 80 | 80
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 72.1 | $ 72.1
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 72.1 | $ 72.1
Outstanding (in shares) | 80 | 80
Class of Warrant or Rights, Warrants Issued March 26, 2020 [Member] |  |
Outstanding (in shares) | 1 |
Outstanding (in shares) | 1 | 1
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 187.5 |
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 187.5 |
Class Of Warrant Or Right, Expiration Date | Mar. 25, 2025 |
Outstanding (in shares) | 1 | 1
Class of Warrant or Rights, Warrants Issued March 30, 2020 [Member] |  |
Outstanding (in shares) | 2 |
Outstanding (in shares) | 2 | 2
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 140.63 |
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 140.63 |
Class Of Warrant Or Right, Expiration Date | Mar. 27, 2025 |
Outstanding (in shares) | 2 | 2
Class of Warrant or Rights, Warrants Issued October 23, 2020 [Member] |  |
Outstanding (in shares) | 15 |
Outstanding (in shares) | 15 | 15
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 86.25 |
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 86.25 |
Class Of Warrant Or Right, Expiration Date | Oct. 21, 2025 |
Outstanding (in shares) | 15 | 15
Class of Warrant or Rights, Warrants Issued October 28, 2020 [Member] |  |
Outstanding (in shares) | 6 |
Outstanding (in shares) | 6 | 6
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 80.63 |
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 80.63 |
Class Of Warrant Or Right, Expiration Date | Oct. 28, 2025 |
Outstanding (in shares) | 6 | 6
Class of Warrant or Rights, Warrants Issued February 16, 2021 [Member] |  |
Outstanding (in shares) | 6 |
Outstanding (in shares) | 6 | 6
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 121.88 |
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 121.88 |
Class Of Warrant Or Right, Expiration Date | Feb. 11, 2026 |
Outstanding (in shares) | 6 | 6
Class of Warrant or Rights, Warrants Issued April 12, 2021 [Member] |  |
Outstanding (in shares) | 50 |
Outstanding (in shares) | 50 | 50
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 56.25 |
Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 56.25 |
Class Of Warrant Or Right, Expiration Date | Apr. 07, 2026 |
Outstanding (in shares) | 50 | 50

X
- Definition Number of warrants or rights exercised in period. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightExercisedInPeriod
Namespace Prefix: | astc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights exercised. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightExercisedInPeriodExercisePrice
Namespace Prefix: | astc_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value for warrants or rights exercised during the period. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightExercisedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of warrants or rights which expired during the period. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightExpiredInPeriod
Namespace Prefix: | astc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights expired in period. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightExpiredInPeriodExercisePrice
Namespace Prefix: | astc_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value for warrants or rights expired during the period. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightExpiredInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of warrants or rights issued. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightIssuedInPeriod
Namespace Prefix: | astc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights issued. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightIssuedInPeriodExercisePrice
Namespace Prefix: | astc_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value for warrants or rights issued during the period. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightIssuedinPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Weighted average remaining contractual term of outstanding warrants or rights. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualTerm
Namespace Prefix: | astc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the aggregate fair market value of outstanding warrants or rights. + References No definition available. + Details
Name: | astc_ClassOfWarrantOrRightWeightedAverageGrantDateFairValueOutstanding
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in YYYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_WarrantsAndRightsOutstandingMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=astc_ClassOfWarrantOrRightsWarrantsIssuedMarch262020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=astc_ClassOfWarrantOrRightsWarrantsIssuedMarch302020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=astc_ClassOfWarrantOrRightsWarrantsIssuedOctober232020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=astc_ClassOfWarrantOrRightsWarrantsIssuedOctober282020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=astc_ClassOfWarrantOrRightsWarrantsIssuedFebruary162021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=astc_ClassOfWarrantOrRightsWarrantsIssuedApril122021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |