Note 1 - Description of the Company and Operating Environment (Details Textual)	Jun. 30, 2025
Number of Patents Granted	17
Number of Wholly Owned Subsidiaries	4

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

No definition available.

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