XML 115 R98.htm IDEA: XBRL DOCUMENT
v3.20.2

Benefit Plans - Additional Information (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018
Defined Contribution Plan Disclosure [Line Items] |  |  |
Employee matching contribution, percent | 60.00% |  |
Employee contributions match | $ 300,000 | $ 300,000 | $ 400,000
Pension Plan | NIGPP |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Multiemployer plan, agreement renewal period |  | 3 years |
Multiemployer plan, agreement expiration date |  | Sep. 30, 2022 |
Multiemployer plan, contribution rate per hour, per employee | 2.48 |  |
Multiemployer plan, contribution amount | $ 44,000 | $ 53,000 | $ 64,000
Maximum |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Employee participants eligible compensation each payroll period, percent | 3.60% |  |

X
- Definition Defined contribution plan maximum employee participants eligible compensation each payroll period percent. + References No definition available. + Details
Name: | asys_DefinedContributionPlanMaximumEmployeeParticipantsEligibleCompensationEachPayrollPeriodPercent
Namespace Prefix: | asys_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Multiemployer plan agreement expiration date. + References No definition available. + Details
Name: | asys_MultiemployerPlanAgreementExpirationDate
Namespace Prefix: | asys_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Multiemployer plan agreement renewal period. + References No definition available. + Details
Name: | asys_MultiemployerPlanAgreementRenewalPeriod
Namespace Prefix: | asys_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Multiemployer plans contribution amount each hour each employee. + References No definition available. + Details
Name: | asys_MultiemployerPlansContributionAmountEachHourEachEmployee
Namespace Prefix: | asys_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 + Details
Name: | us-gaap_MultiemployerPlanEmployerContributionCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=asys_NationalIntegratedGroupPensionPlanAndTrustFundMember
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: |