Note 1 - Description of the Company and Operating Environment (Details Textual)	Jun. 30, 2023
Number of Patents Granted	18
Number of Wholly Owned Subsidiaries	3
Number of Locations using TRACER 1000	29
Number of Countries using TRACER 1000	14

Represents the number of subsidiaries to which ATI licenses AMS Technology.

No definition available.

Name:	astc_NumberofWhollyOwnedSubsidiaries
Namespace Prefix:	astc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant