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Nature of Business and Liquidity (Details)	Jun. 30, 2022 $ / shares
Merger Agreement [Member]
Nature of Business and Liquidity (Details) [Line Items]
Common stock, par value	$ 0.0001

X

- Definition

Common stock, par value.

+ References

No definition available.

+ Details

Name:	amst_CommonStockParValue
Namespace Prefix:	amst_
Data Type:	dtr:perShareItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Details

Name:	amst_EquityIncentivePlanAxis=amst_MergerAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: