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Significant Accounting Policies (Details) - Schedule of contract liabilities - USD ($) | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
Schedule Of Contract Liabilities Abstract |  |
Opening balance | $ 333,200 | $ 380,000
Billings | 706,473 | 627,780
Less revenue recognized from continuing operations | (697,001) | (674,580)
Closing balance | $ 342,672 | $ 333,200

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References No definition available. + Details
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Namespace Prefix: | amst_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
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Namespace Prefix: | amst_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | amst_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 + Details
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