XML 52 R40.htm IDEA: XBRL DOCUMENT
v3.20.2

Stockholders' Equity (Deficit) - Schedule of Warrants Outstanding (Details) - $ / shares | Mar. 30, 2020 | Mar. 26, 2020 | Sep. 30, 2020 | Jun. 30, 2020
--- | --- | --- | --- | ---
Warrants issued on March 26, 2020 |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Issue Date |  | Mar. 26, 2020 |  |
Classification |  | Equity |  |
Exercise Price |  | $ 6.25 |  |
Expiration Date |  | Mar. 25, 2025 |  |
Number of Shares Underlying Warrants |  |  | 24,780 | 24,780
Warrants issued on March 30, 2020 |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Issue Date | Mar. 30, 2020 |  |  |
Classification | Equity |  |  |
Exercise Price | $ 4.69 |  |  |
Expiration Date | Mar. 27, 2025 |  |  |
Number of Shares Underlying Warrants |  |  | 61,133 | 61,133
Warrants |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Number of Shares Underlying Warrants |  |  | 85,913 | 85,913

X
- Definition Warrant and rights outstanding issue date. + References No definition available. + Details
Name: | astc_WarrantAndRightsOutstandingIssueDate
Namespace Prefix: | astc_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Warrants and rights classification. + References No definition available. + Details
Name: | astc_WarrantsAndRightsClassification
Namespace Prefix: | astc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num: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 CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + 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_WarrantsIssuedOnMarchTwentySixTwoThousandTwentyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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