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v2.4.1.9

Major Customers and Foreign Sales (Details) | 3 Months Ended
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Dec. 31, 2014 Customer | Dec. 31, 2013 Customer
Revenue, Major Customer [Line Items] |  |
Revenue, number of major customers | 2 asys_EntityWideRevenueMajorCustomerNumber | 2 asys_EntityWideRevenueMajorCustomerNumber
Revenues, percentage | 100.00%asys_RevenuesPercentage | 100.00%asys_RevenuesPercentage
United States |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 23.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = country_US | 42.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = country_US
China |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 26.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = country_CN | 11.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = country_CN
Taiwan |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 19.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = country_TW | 11.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = country_TW
Other |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 6.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = asys_SegmentGeographicalGroupsOfCountriesOtherImmaterialLocationsGroupOneMember | 11.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = asys_SegmentGeographicalGroupsOfCountriesOtherImmaterialLocationsGroupOneMember
Total Asia |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 51.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember | 33.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
Germany |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 10.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = country_DE | 8.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = country_DE
Other |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 16.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = asys_SegmentGeographicalGroupsOfCountriesOtherImmaterialLocationsGroupTwoMember | 17.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = asys_SegmentGeographicalGroupsOfCountriesOtherImmaterialLocationsGroupTwoMember
Total Europe |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 26.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 25.00%asys_RevenuesPercentage / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
Customer Number One [Member] |  |
Revenue, Major Customer [Line Items] |  |
Revenue, major customer, percentage | 12.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = asys_CustomerNumberOneMember | 33.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = asys_CustomerNumberOneMember
Customer Number Two [Member] |  |
Revenue, Major Customer [Line Items] |  |
Revenue, major customer, percentage | 11.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = asys_CustomerNumberTwoMember | 23.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = asys_CustomerNumberTwoMember

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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