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Basis of Presentation Revenue Recognition (Details) | 9 Months Ended
--- | ---
Jun. 30, 2012
Maximum [Member] |
Gross Profit [Line Items] |
Contingent portion sales price percent | 20.00%
Minimum [Member] |
Gross Profit [Line Items] |
Contingent portion sales price percent | 10.00%

X
- Definition Contingent Portion Sales Price Percent + References No definition available. + Details
Name: | asys_ContingentPortionSalesPricePercent
Namespace Prefix: | asys_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | asys_GrossProfitLineItems
Namespace Prefix: | asys_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration