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Basis of Presentation - Goodwill (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Mar. 31, 2015
Goodwill [Roll Forward] |
Goodwill, gross, beginning of year | $ 13,043 us-gaap_GoodwillGross
Goodwill, impaired, accumulated impairment loss, beginning of year | (4,720)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Goodwill, net, beginning of year | 8,323 us-gaap_Goodwill
Goodwill recognized due to acquisitions | 6,619 us-gaap_GoodwillAcquiredDuringPeriod
Change in foreign exchange rates | (346)us-gaap_GoodwillTranslationAdjustments
Goodwill, gross, end of quarter | 19,105 us-gaap_GoodwillGross
Goodwill, impaired, accumulated impairment loss, end of quarter | (4,509)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Goodwill, net, end of quarter | 14,596 us-gaap_Goodwill
Solar |
Goodwill [Roll Forward] |
Goodwill, gross, beginning of year | 12,315 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = asys_SolarEquipmentMember
Goodwill, impaired, accumulated impairment loss, beginning of year | (4,720)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = asys_SolarEquipmentMember
Goodwill, net, beginning of year | 7,595 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = asys_SolarEquipmentMember
Goodwill recognized due to acquisitions | 2,272 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = asys_SolarEquipmentMember
Change in foreign exchange rates | (346)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = asys_SolarEquipmentMember
Goodwill, gross, end of quarter | 14,030 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = asys_SolarEquipmentMember
Goodwill, impaired, accumulated impairment loss, end of quarter | (4,509)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = asys_SolarEquipmentMember
Goodwill, net, end of quarter | 9,521 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = asys_SolarEquipmentMember
Semiconductor |
Goodwill [Roll Forward] |
Goodwill, gross, beginning of year | 0 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = asys_SemiconductorEquipmentMember
Goodwill, impaired, accumulated impairment loss, beginning of year | 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = asys_SemiconductorEquipmentMember
Goodwill, net, beginning of year | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = asys_SemiconductorEquipmentMember
Goodwill recognized due to acquisitions | 4,347 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = asys_SemiconductorEquipmentMember
Change in foreign exchange rates | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = asys_SemiconductorEquipmentMember
Goodwill, gross, end of quarter | 4,347 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = asys_SemiconductorEquipmentMember
Goodwill, impaired, accumulated impairment loss, end of quarter | 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = asys_SemiconductorEquipmentMember
Goodwill, net, end of quarter | 4,347 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = asys_SemiconductorEquipmentMember
Polishing |
Goodwill [Roll Forward] |
Goodwill, gross, beginning of year | 728 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = asys_PolishingSuppliesAndEquipmentMember
Goodwill, impaired, accumulated impairment loss, beginning of year | 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = asys_PolishingSuppliesAndEquipmentMember
Goodwill, net, beginning of year | 728 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = asys_PolishingSuppliesAndEquipmentMember
Change in foreign exchange rates | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = asys_PolishingSuppliesAndEquipmentMember
Goodwill, gross, end of quarter | 728 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = asys_PolishingSuppliesAndEquipmentMember
Goodwill, impaired, accumulated impairment loss, end of quarter | 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = asys_PolishingSuppliesAndEquipmentMember
Goodwill, net, end of quarter | $ 728 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = asys_PolishingSuppliesAndEquipmentMember

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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