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Basis of Presentation - Goodwill (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Dec. 31, 2014
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
Change in foreign exchange rates | (100)us-gaap_GoodwillTranslationAdjustments
Goodwill, gross, end of quarter | 12,882 us-gaap_GoodwillGross
Goodwill, impaired, accumulated impairment loss, end of quarter | (4,659)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Goodwill, net, end of quarter | 8,223 us-gaap_Goodwill
Solar and semiconductor equipment |
Goodwill [Roll Forward] |
Goodwill, gross, beginning of year | 12,315 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = asys_SolarAndSemiconductorEquipmentMember
Goodwill, impaired, accumulated impairment loss, beginning of year | (4,720)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = asys_SolarAndSemiconductorEquipmentMember
Goodwill, net, beginning of year | 7,595 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = asys_SolarAndSemiconductorEquipmentMember
Change in foreign exchange rates | (100)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = asys_SolarAndSemiconductorEquipmentMember
Goodwill, gross, end of quarter | 12,154 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = asys_SolarAndSemiconductorEquipmentMember
Goodwill, impaired, accumulated impairment loss, end of quarter | (4,659)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = asys_SolarAndSemiconductorEquipmentMember
Goodwill, net, end of quarter | 7,495 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = asys_SolarAndSemiconductorEquipmentMember
Polishing supplies and equipment |
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

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- 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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