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Warrants (Details) - shares	Mar. 31, 2023	Jun. 30, 2022
Warrants [Abstract]
Warrants outstanding	132,562	118,478

X

- References

No definition available.

+ Details

Name:	amst_WarrantsAbstract
Namespace Prefix:	amst_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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