Note 1 - General Information (Details Textual)	Mar. 31, 2022
Number of Patents Granted	24
Number of Additional Patents In Process	2
Number of Wholly Owned Subsidiaries	3

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