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Note 4 - Other Accrued Liabilities - Other Accrued Liabilities (Details) - USD ($) | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Professional services | $ 769,000 | $ 472,000
Operating costs | 489,000 | 450,000
Other | 326,000 | 304,000
Total other accrued liabilities | $ 1,584,000 | $ 1,226,000

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- Definition The amount of accrued liabilities classified as current not specifically disclosed. + References No definition available. + Details
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Namespace Prefix: | ams_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of accrued operating costs classified as current. + References No definition available. + Details
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Namespace Prefix: | ams_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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