$AMS
AMERICAN SHARED HOSPITAL SERVICES Stock $ams

$ams Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000074482521000030 Filed on April 06, 2021

Income Statement

Concept	2019 Q4	2019	2018 Q4
Revenue	$4.786M	$20.61M	$4.770M
YoY Change	0.34%	4.52%	-6.1%
Cost Of Revenue	$3.345M	$13.69M	$3.205M
YoY Change	4.37%	11.92%	10.52%
Gross Profit	$1.441M	$6.920M	$1.565M
YoY Change	-7.92%	-7.56%	-28.21%
Gross Profit Margin	30.11%	33.58%	32.81%
Selling, General & Admin	$859.0K	$4.060M	$927.0K
YoY Change	-7.34%	1.65%	-9.12%
% of Gross Profit	59.61%	58.67%	59.23%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.639M	$7.411M	$1.680M
YoY Change	-2.44%	8.7%	3.07%
% of Gross Profit	113.74%	107.1%	107.35%
Operating Expenses	$859.0K	$4.060M	$927.0K
YoY Change	-7.34%	1.65%	-9.12%
Operating Profit	$582.0K	$1.542M	$638.0K
YoY Change	-8.78%	-17.14%	-45.0%
Interest Expense	-$302.0K	$1.318M	-$397.0K
YoY Change	-23.93%	-19.19%	-34.92%
% of Operating Profit	-51.89%	85.47%	-62.23%
Other Income/Expense, Net
YoY Change
Pretax Income	$280.0K	$1.558M	$241.0K
YoY Change	16.18%	-25.13%	-1305.0%
Income Tax	-$122.0K	$128.0K	$50.00K
% Of Pretax Income	-43.57%	8.22%	20.75%
Net Earnings	$193.0K	$659.0K	$178.0K
YoY Change	8.43%	-35.58%	-87.46%
Net Earnings / Revenue	4.03%	3.2%	3.73%
Basic Earnings Per Share		$0.11
Diluted Earnings Per Share	$30.00K	$0.11	$40.00K
COMMON SHARES
Basic Shares Outstanding	5.816M shares		5.714M shares
Diluted Shares Outstanding		5.930M shares

Balance Sheet

Concept	2019 Q4	2019	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.429M	$1.429M	$1.442M
YoY Change	-0.9%	-0.9%	-32.93%
Cash & Equivalents	$1.429M	$1.429M	$1.442M
Short-Term Investments
Other Short-Term Assets	$2.250M	$2.250M	$1.626M
YoY Change	38.38%	38.38%	7.68%
Inventory
Prepaid Expenses
Receivables	$6.894M	$6.894M	$5.502M
Other Receivables	$169.0K	$169.0K	$239.0K
Total Short-Term Assets	$10.74M	$10.74M	$9.946M
YoY Change	8.0%	8.0%	11.84%
LONG-TERM ASSETS
Property, Plant & Equipment	$41.48M	$42.59M	$46.69M
YoY Change	-11.17%	-8.8%	-3.71%
Goodwill	$0.00
YoY Change
Intangibles	$0.00
YoY Change
Long-Term Investments
YoY Change
Other Assets	$455.0K	$455.0K	$862.0K
YoY Change	-47.22%	-47.22%	8.84%
Total Long-Term Assets	$43.04M	$43.04M	$47.56M
YoY Change	-9.49%	-9.49%	-3.5%
TOTAL ASSETS
Total Short-Term Assets	$10.74M	$10.74M	$9.946M
Total Long-Term Assets	$43.04M	$43.04M	$47.56M
Total Assets	$53.78M	$53.78M	$57.50M
YoY Change	-6.47%	-6.47%	-1.16%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$557.0K	$557.0K	$435.0K
YoY Change	28.05%	28.05%	21.17%
Accrued Expenses	$1.817M	$1.817M	$2.513M
YoY Change	-27.7%	-27.7%	82.1%
Deferred Revenue
YoY Change
Short-Term Debt	$475.0K	$475.0K	$0.00
YoY Change
Long-Term Debt Due	$1.526M	$5.235M	$2.119M
YoY Change	-27.98%	-19.78%	-13.83%
Total Short-Term Liabilities	$8.214M	$8.214M	$9.474M
YoY Change	-13.3%	-13.3%	5.18%
LONG-TERM LIABILITIES
Long-Term Debt	$1.954M	$10.13M	$3.332M
YoY Change	-41.36%	-25.73%	-7.39%
Other Long-Term Liabilities	$1.113M	$1.113M	$382.0K
YoY Change	191.36%	191.36%	-23.6%
Total Long-Term Liabilities	$1.954M	$11.24M	$3.332M
YoY Change	-41.36%	-19.81%	-7.39%
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.214M	$8.214M	$9.474M
Total Long-Term Liabilities	$1.954M	$11.24M	$3.332M
Total Liabilities	$10.17M	$27.75M	$12.81M
YoY Change	-20.6%	-14.35%	1.59%
SHAREHOLDERS EQUITY
Retained Earnings	$8.555M		$7.896M
YoY Change	8.35%		14.88%
Common Stock	$17.48M		$17.21M
YoY Change	1.58%		1.31%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$26.03M	$26.03M	$25.10M
YoY Change
Total Liabilities & Shareholders Equity	$53.78M	$53.78M	$57.50M
YoY Change	-6.47%	-6.47%	-1.16%

Cashflow Statement

Concept	2019 Q4	2019	2018 Q4
OPERATING ACTIVITIES
Net Income	$193.0K	$659.0K	$178.0K
YoY Change	8.43%	-35.58%	-87.46%
Depreciation, Depletion And Amortization	$1.639M	$7.411M	$1.680M
YoY Change	-2.44%	8.7%	3.07%
Cash From Operating Activities	$1.920M	$8.047M	$1.837M
YoY Change	4.52%	-0.19%	-35.99%
INVESTING ACTIVITIES
Capital Expenditures	-$101.0K	$990.0K	-$390.0K
YoY Change	-74.1%	-37.22%	875.0%
Acquisitions		$0.00
YoY Change
Other Investing Activities	-$160.0K	$0.00	$51.00K
YoY Change	-413.73%	-100.0%
Cash From Investing Activities	-$261.0K	-$990.0K	-$339.0K
YoY Change	-23.01%	-35.12%	747.5%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$1.980M
YoY Change		-19.74%
Cash From Financing Activities	-1.527M	-$7.070M	-1.895M
YoY Change	-19.42%	-2.43%	-0.26%
NET CHANGE
Cash From Operating Activities	1.920M	$8.047M	1.837M
Cash From Investing Activities	-261.0K	-$990.0K	-339.0K
Cash From Financing Activities	-1.527M	-$7.070M	-1.895M
Net Change In Cash	132.0K	-$13.00K	-397.0K
YoY Change	-133.25%	-98.17%	-142.69%
FREE CASH FLOW
Cash From Operating Activities	$1.920M	$8.047M	$1.837M
Capital Expenditures	-$101.0K	$990.0K	-$390.0K
Free Cash Flow	$2.021M	$7.057M	$2.227M
YoY Change	-9.25%	8.82%	-23.47%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000744825
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	1-08789
CY2020	dei	Entity Registrant Name EntityRegistrantName	American Shared Hospital Services
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	CA
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	94-2918118
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	Two Embarcadero Center
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 410,
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	San Francisco,
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	94111-4107
CY2020	dei	City Area Code CityAreaCode	415
CY2020	dei	Local Phone Number LocalPhoneNumber	788-5300
CY2020	dei	Security12b Title Security12bTitle	Common Stock No Par Value
CY2020	dei	Trading Symbol TradingSymbol	AMS
CY2020	dei	Security Exchange Name SecurityExchangeName	NYSEAMER
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	true
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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CY2020	dei	Entity Shell Company EntityShellCompany	false
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CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	65000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	76000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-2966000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1187000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-762000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-260000	USD
CY2020	ams	Increase Decrease In Accounts Payable Accrued Liabilities And Deferred Revenue IncreaseDecreaseInAccountsPayableAccruedLiabilitiesAndDeferredRevenue	-263000	USD
CY2019	ams	Increase Decrease In Accounts Payable Accrued Liabilities And Deferred Revenue IncreaseDecreaseInAccountsPayableAccruedLiabilitiesAndDeferredRevenue	-28000	USD
CY2020	ams	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-353000	USD
CY2019	ams	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-332000	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	179000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	130000	USD
CY2020	ams	Increase Decrease In Other Receivable Insurance Settlements IncreaseDecreaseInOtherReceivableInsuranceSettlements	0	USD
CY2019	ams	Increase Decrease In Other Receivable Insurance Settlements IncreaseDecreaseInOtherReceivableInsuranceSettlements	-160000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9745000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8047000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	455000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	990000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2084000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2020	us-gaap	Proceeds From Sale Of Machinery And Equipment ProceedsFromSaleOfMachineryAndEquipment	150000	USD
CY2019	us-gaap	Proceeds From Sale Of Machinery And Equipment ProceedsFromSaleOfMachineryAndEquipment	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2389000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-990000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1726000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1980000	USD
CY2020	ams	Repayments Of Long Term Finance Lease Obligations RepaymentsOfLongTermFinanceLeaseObligations	3199000	USD
CY2019	ams	Repayments Of Long Term Finance Lease Obligations RepaymentsOfLongTermFinanceLeaseObligations	4142000	USD
CY2020	ams	Proceeds From Financing From Acquisition ProceedsFromFinancingFromAcquisition	1425000	USD
CY2019	ams	Proceeds From Financing From Acquisition ProceedsFromFinancingFromAcquisition	0	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	761000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	939000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	30000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2020	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	0	USD
CY2019	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	42000	USD
CY2020	us-gaap	Proceeds From Long Term Capital Lease Obligations ProceedsFromLongTermCapitalLeaseObligations	-519000	USD
CY2019	us-gaap	Proceeds From Long Term Capital Lease Obligations ProceedsFromLongTermCapitalLeaseObligations	-51000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-4810000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-7070000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2546000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-13000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1779000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1792000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4325000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1779000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	938000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1318000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	339000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	397000	USD
CY2020	ams	Lease Reassessment Right Of Use Assets And Lease Liabilities LeaseReassessmentRightOfUseAssetsAndLeaseLiabilities	67000	USD
CY2020	ams	Non Cash Right Of Use Assets And Lease Liabilities NonCashRightOfUseAssetsAndLeaseLiabilities	135000	USD
CY2019	ams	Non Cash Right Of Use Assets And Lease Liabilities NonCashRightOfUseAssetsAndLeaseLiabilities	1362000	USD
CY2020	ams	Interest Capitalized To Property And Equipment InterestCapitalizedToPropertyAndEquipment	119000	USD
CY2019	ams	Interest Capitalized To Property And Equipment InterestCapitalizedToPropertyAndEquipment	110000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	496000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	1293000	USD
CY2020	ams	Acquisition Of Equipment With Long Term Debt Financing AcquisitionOfEquipmentWithLongTermDebtFinancing	1184000	USD
CY2019	ams	Acquisition Of Equipment With Long Term Debt Financing AcquisitionOfEquipmentWithLongTermDebtFinancing	0	USD
CY2020	ams	Acquisition Of Insurance With Short Term Financing AcquisitionOfInsuranceWithShortTermFinancing	634000	USD
CY2019	ams	Acquisition Of Insurance With Short Term Financing AcquisitionOfInsuranceWithShortTermFinancing	526000	USD
CY2020	ams	Payments For Working Capital PaymentsForWorkingCapital	43000	USD
CY2020	ams	Subsequent Working Capital Payment Accrued For Acquisition SubsequentWorkingCapitalPaymentAccruedForAcquisition	154000	USD
CY2020Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	4325000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of estimates in the preparation of financial statements</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> – In preparing the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America, management makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements, as well as the reported amounts of revenues and expenses during the reporting period. Significant accounting estimates reflected in the Company’s consolidated financial statements include the estimated useful lives of fixed assets and its salvage values, revenues and costs of sales for turn-key and revenue sharing arrangements. Actual results could differ from those estimates.</span>
CY2020	us-gaap	Advertising Expense AdvertisingExpense	237000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	144000	USD
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	119000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	110000	USD
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-8264000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4325000	USD
CY2020Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Obligations FairValueLiabilitiesMeasuredOnRecurringBasisObligations	4662000	USD
CY2020Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	4662000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1779000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1779000	USD
CY2019Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Obligations FairValueLiabilitiesMeasuredOnRecurringBasisObligations	3075000	USD
CY2019Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	3075000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P10Y
CY2020	ams	Percentage Of Tax Benefit Realized Upon Settlement PercentageOfTaxBenefitRealizedUponSettlement	0.50
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-7058000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	659000	USD
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	6182000	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	5919000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	11000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6182000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5930000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.14
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.11
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.14
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.11
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	406000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	387000	shares
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-8264000	USD
CY2019	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	76157000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	96941000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	45739000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	55461000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	30418000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	41480000	USD
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-8264000	USD
CY2020	ams	Payments For Working Capital PaymentsForWorkingCapital	43000	USD
CY2020	ams	Payments To Acquire Asset PaymentsToAcquireAsset	214000	USD
CY2020	ams	Subsequent Working Capital Payment Accrued For Acquisition SubsequentWorkingCapitalPaymentAccruedForAcquisition	154000	USD
CY2020Q4	ams	Number Of Debt Instruments NumberOfDebtInstruments	7	note
CY2019Q4	ams	Number Of Debt Instruments NumberOfDebtInstruments	6	note
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	27000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1157000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	768000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	802000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	839000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	592000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	466000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	4624000	USD
CY2019Q4	ams	Finance Lease Obligations FinanceLeaseObligations	22860000	USD
CY2019Q4	ams	Finance Lease Accounts Receivable FinanceLeaseAccountsReceivable	4600000	USD
CY2020Q4	ams	Number Of Financing Leases NumberOfFinancingLeases	6	lease
CY2020Q4	ams	Finance Lease Obligations FinanceLeaseObligations	18093000	USD
CY2020Q4	ams	Finance Lease Accounts Receivable FinanceLeaseAccountsReceivable	1892000	USD
CY2019Q4	ams	Number Of Financing Leases NumberOfFinancingLeases	10	lease
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	6590000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1576000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1083000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	522000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	9771000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	852000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	8919000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	5945000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	2974000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	886000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	886000	USD
CY2020	ams	Lease Reassessment Right Of Use Assets And Lease Liabilities LeaseReassessmentRightOfUseAssetsAndLeaseLiabilities	67000	USD
CY2020	ams	Non Cash Right Of Use Assets And Lease Liabilities NonCashRightOfUseAssetsAndLeaseLiabilities	135000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	346000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	353000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	248000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	8000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	443000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	209000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	955000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	69000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	886000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1737000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	88000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	88000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	207000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	207000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	117000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	130000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	414000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	414000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	780000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	780000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1909000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-311000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-266000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-251000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	24000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-90000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-2151000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-652000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1737000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	564000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3112000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	564000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3112000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	99000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	117000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Returns And Allowances DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances	43000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Returns And Allowances DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances	248000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	5000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	4000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	50000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	229000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	627000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	921000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	824000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1519000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	678000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	921000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	146000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	598000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	418000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2514000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	418000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	2514000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	418000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2514000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-1844000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	167000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-199000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-80000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	6000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	29000	USD
CY2020	ams	Effective Income Tax Rate Reconciliation Return To Provision True Up Amount EffectiveIncomeTaxRateReconciliationReturnToProvisionTrueUpAmount	22000	USD
CY2019	ams	Effective Income Tax Rate Reconciliation Return To Provision True Up Amount EffectiveIncomeTaxRateReconciliationReturnToProvisionTrueUpAmount	39000	USD
CY2020	ams	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsAmount	16000	USD
CY2019	ams	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsAmount	80000	USD
CY2020	ams	Effective Income Tax Rate Reconciliation Capital Loss Carryforward Expiration Amount EffectiveIncomeTaxRateReconciliationCapitalLossCarryforwardExpirationAmount	246000	USD
CY2019	ams	Effective Income Tax Rate Reconciliation Capital Loss Carryforward Expiration Amount EffectiveIncomeTaxRateReconciliationCapitalLossCarryforwardExpirationAmount	0	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-243000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-175000	USD
CY2020	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	259000	USD
CY2019	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	68000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1737000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	2219000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-243000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-175000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	275000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	259000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	87000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	16000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	172000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	275000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	259000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	15000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	103000	shares
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	299000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	613000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	2.85
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y1M20D
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	18000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.87
CY2019	ams	Sharebased Compensation Arrangement By Sharebased Payment Award Options Granted Weighted Average Remaining Contractual Term SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm	P7Y
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	16000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	2.59
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	165000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	3.07
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	450000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	2.78
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y5M8D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	27000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	10000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	1.88
CY2020	ams	Sharebased Compensation Arrangement By Sharebased Payment Award Options Granted Weighted Average Remaining Contractual Term SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm	P7Y
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	43000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	2.54
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	417000	shares
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	38000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	42000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	2.79
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y7M9D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	425000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	2.79
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y3M
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	405000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	2.80
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y5M23D
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.78
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.54
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	16000	shares
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	16000	shares
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	37000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	12000	USD
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	1.07
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	125000	shares
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	1.20
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	18000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.54
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	118000	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	1.22
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	25000	shares
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	1.40
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	10000	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.78
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	23000	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	1.22
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	12000	shares
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2020	ams	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Foreiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForeitureRate	0.000
CY2019	ams	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Foreiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForeitureRate	0.000
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.40
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.50
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.004
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.019
CY2001Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1000000	shares
CY2020Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	72000	shares
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.04
CY2016Q3	ams	Lease Expiration Period LeaseExpirationPeriod	P7Y
CY2020Q4	us-gaap	Area Of Land AreaOfLand	1600	sqft
CY2020	ams	Operating Lease Monthly Lease Expense OperatingLeaseMonthlyLeaseExpense	7800	USD
CY2020Q4	ams	Lessee Operating Lease Liability Payments Net Of Sublease Income Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueNextTwelveMonths	350000	USD
CY2020Q4	ams	Lessee Operating Lease Liability Payments Net Of Sublease Income Due Year Two LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo	355000	USD
CY2020Q4	ams	Lessee Operating Lease Liability Payments Net Of Sublease Income Due Year Three LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearThree	259000	USD
CY2020Q4	ams	Lessee Operating Lease Liability Payments Net Of Sublease Income Due Year Four LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour	8000	USD
CY2020Q4	ams	Lessee Operating Lease Liability Payments Net Of Sublease Income Due LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue	972000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	404000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	380000	USD
CY2020Q4	ams	Number Of Cobalt60 Reloads NumberOfCobalt60Reloads	3	reload
CY2020Q4	ams	Number Of Leksell Gamma Knife Icon System Installs NumberOfLeksellGammaKnifeIconSystemInstalls	4	install
CY2020Q4	ams	Number Of Purchase Commitments NumberOfPurchaseCommitments	2	purchase
CY2020Q4	us-gaap	Contractual Obligation ContractualObligation	72894000	USD
CY2020Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	12715000	USD
CY2020Q4	us-gaap	Contractual Obligation Due In Second And Third Year ContractualObligationDueInSecondAndThirdYear	51747000	USD
CY2020Q4	us-gaap	Contractual Obligation Due In Fourth And Fifth Year ContractualObligationDueInFourthAndFifthYear	5072000	USD
CY2020Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	3360000	USD
CY2020Q4	ams	Number Of Cobalt60 Reloads NumberOfCobalt60Reloads	3	reload
CY2020Q4	ams	Number Of Perfexion Upgrades NumberOfPerfexionUpgrades	1	upgrade
CY2020Q4	ams	Number Of Leksell Gamma Knife Icon System Installs NumberOfLeksellGammaKnifeIconSystemInstalls	4	install

Files In Submission

Name	View Source	Status
0000744825-21-000030-index-headers.html	Edgar Link	pending
0000744825-21-000030-index.html	Edgar Link	pending
0000744825-21-000030.txt	Edgar Link	pending
0000744825-21-000030-xbrl.zip	Edgar Link	pending
ams-20201231.htm	Edgar Link	pending
ams-20201231.xsd	Edgar Link	pending
ams-20201231xex311.htm	Edgar Link	pending
ams-20201231xex312.htm	Edgar Link	pending
ams-20201231xex321.htm	Edgar Link	pending
ams-20201231_cal.xml	Edgar Link	unprocessable
ams-20201231_def.xml	Edgar Link	unprocessable
ams-20201231_htm.xml	Edgar Link	completed
ams-20201231_lab.xml	Edgar Link	unprocessable
ams-20201231_pre.xml	Edgar Link	unprocessable
ashs-2020consentexhibit231.htm	Edgar Link	pending
ashs10-kexhibit41.htm	Edgar Link	pending
ashsex1011dfullyexecuted.htm	Edgar Link	pending
ashsex1011dfullyexecuted001.jpg	Edgar Link	pending
exhibit211.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$AMS
AMERICAN SHARED HOSPITAL SERVICES Stock $ams

2019 Q4 Form 10-K Financial Statement

#000074482521000030 Filed on April 06, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMS AMERICAN SHARED HOSPITAL SERVICES Stock $ams

2019 Q4 Form 10-K Financial Statement

#000074482521000030 Filed on April 06, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMS
AMERICAN SHARED HOSPITAL SERVICES Stock $ams