The maximum funded debt to EBITDA ratio allowed under the covenant of the debt instrument.

No definition available.

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- Definition

Requirement for fixed charge coverage ratio under the debt agreement.

+ References

No definition available.

+ Details

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- Definition

The number of debt instruments.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

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-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Topic 470
-SubTopic 20
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-Subparagraph (b)
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Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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-Subparagraph (SX 210.5-02.19(b),22(b))
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Balance Type:	credit
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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=ams_TheCreditAgreementMember
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- Details

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- Details

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Note 3 - Long-Term Debt Financing (Details Textual)		9 Months Ended		12 Months Ended
Note 3 - Long-Term Debt Financing (Details Textual)	Apr. 09, 2021 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2021	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022 USD ($)
Long-Term Debt		$ 11,913,000
Amortization of Debt Issuance Costs		44,000	$ 65,000
Debt Issuance Costs, Net		163,000					$ 198,000
The Credit Agreement [Member] \| Fifth Third Bank, N.A. [Member]
Debt Instrument, Term (Year)	5 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 22,000,000
Number of Debt Instruments	3
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio	1.25
Debt Instrument, Covenant, Maximum Funded Debt to EDITDA Ratio	3
The Credit Agreement, First Loan and Second Loan Facility [Member] \| Fifth Third Bank, N.A. [Member]
Debt Instrument, Face Amount	$ 9,500,000
Long-Term Debt		11,200,000					12,624,000
The Credit Agreement, First Loan and Second Loan Facility [Member] \| Fifth Third Bank, N.A. [Member] \| Forecast [Member]
Debt Instrument, Interest Rate, Stated Percentage					48.00%
The Credit Agreement, Second Loan Facility [Member] \| Fifth Third Bank, N.A. [Member]
Debt Instrument, Face Amount	$ 5,500,000
The Credit Agreement, Third Loan Facility [Member] \| Fifth Third Bank, N.A. [Member] \| Revolving Credit Facility [Member]
Debt Instrument, Term (Year)	5 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 7,000,000
Long-Term Line of Credit		1,400,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage				0.25%
The Credit Agreement, Third Loan Facility [Member] \| Fifth Third Bank, N.A. [Member] \| Revolving Credit Facility [Member] \| London Interbank Offered Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	3.00%
DFC Loan [Member]
Long-Term Debt		876,000					1,041,000
Debt Instrument, Interest Rate, Stated Percentage						3.67%
Debt Issuance Costs, Gross		$ 9,000					$ 9,000