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Note 2 - Property and Equipment (Details Textual) | Mar. 31, 2024
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Medical and Office Equipment [Member] | Minimum [Member] |
Property, Plant and Equipment, Useful Life (Year) | 3 years
Medical and Office Equipment [Member] | Maximum [Member] |
Property, Plant and Equipment, Useful Life (Year) | 10 years
PBRT Equipment [Member] |
Property, Plant and Equipment, Useful Life (Year) | 20 years

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=ams_MedicalAndOfficeEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=ams_PBRTEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |