XML 41 R29.htm IDEA: XBRL DOCUMENT
v3.21.1

General Information - Additional Information (Details) | Oct. 28, 2020 USD ($) | Mar. 31, 2021 USD ($) Patent
--- | --- | ---
Organization Consolidation And Presentation Of Financial Statements [Abstract] |  |
Number of patents granted | Patent |  | 28
Number of additional patents in process | Patent |  | 2
Number of wholly-owned subsidiaries |  | 3
Purchase orders for TRACER 1000 | $ 1,000,000 |
Additional future service and support commitments | $ 1,000,000 |

X
- Definition Additional future service and support commitments. + References No definition available. + Details
Name: | astc_AdditionalFutureServiceAndSupportCommitments
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of additional patents in process. + References No definition available. + Details
Name: | astc_NumberOfAdditionalPatentsInProcess
Namespace Prefix: | astc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of patents granted. + References No definition available. + Details
Name: | astc_NumberOfPatentsGranted
Namespace Prefix: | astc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of wholly-owned subsidiaries. + References No definition available. + Details
Name: | astc_NumberOfWhollyOwnedSubsidiaries
Namespace Prefix: | astc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Purchase orders. + References No definition available. + Details
Name: | astc_PurchaseOrders
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration