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v3.25.1

Note 8 - Income Taxes (Details Textual) | 3 Months Ended
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Mar. 31, 2024 USD ($)
Unrecognized Tax Benefits, Decrease Resulting from Foreign Taxes | $ 100,000

X
- Definition Amount of decrease in unrecognized tax benefits resulting from foreign taxes. + References No definition available. + Details
Name: | ams_UnrecognizedTaxBenefitsDecreaseResultingFromForeignTaxes
Namespace Prefix: | ams_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration