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v2.4.0.6

Major Customers and Foreign Sales (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2012 Customer | Jun. 30, 2011 Customer | Jun. 30, 2012 Customer | Jun. 30, 2011 Customer
Revenue, Major Customer [Line Items] |  |  |  |
Revenue, number of major customers | 4 | 3 | 2 | 2
Revenues, percentage |  |  | 100.00% | 100.00%
Customer Number One [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue, major customer, percentage | 27.00% | 19.00% | 17.00% | 12.00%
Customer Number Two [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue, major customer, percentage | 14.00% | 18.00% | 10.00% | 11.00%
Customer Number Three [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue, major customer, percentage | 12.00% | 16.00% |  |
Customer Number Four [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue, major customer, percentage | 11.00% |  |  |
NORTH AMERICA [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues, percentage |  |  | 8.00% | 5.00%
CHINA [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues, percentage |  |  | 50.00% | 65.00%
TAIWAN [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues, percentage |  |  | 7.00% | 18.00%
Other [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues, percentage |  |  | 14.00% | 5.00%
ASIA [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues, percentage |  |  | 71.00% | 88.00%
EUROPE [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenues, percentage |  |  | 21.00% | 7.00%

X
- Definition Entity-Wide Revenue, Major Customer, Number + References No definition available. + Details
Name: | asys_EntityWideRevenueMajorCustomerNumber
Namespace Prefix: | asys_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenues, Percentage + References No definition available. + Details
Name: | asys_RevenuesPercentage
Namespace Prefix: | asys_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_EntityWideRevenueMajorCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References No definition available. + Details
Name: | us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration