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Acquisition - Consideration Transferred (Details) (BTU International, Inc (BTU) Merger, USD $) In Thousands, except Per Share data, unless otherwise specified | 0 Months Ended |
--- | --- | ---
Jan. 30, 2015 | Jan. 30, 2015
Business Acquisition [Line Items] |  |
Exchange ratio | 0.3291 asys_ConversionOfStockConversionRatioSharesOfStockExchangedPerEachShareOfSubsidiaryStock |
Amtech common stock issued for consideration | 3,186 us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1 |
Amtech common stock per share price on January 30, 2015 | $ 8.20 us-gaap_SharePrice | $ 8.20 us-gaap_SharePrice
Consideration for BTU common shares and restricted stock units | $ 26,125 asys_BusinessCombinationConsiderationTransferredForCommonAndRestrictedStockUnits |
Total fair value of consideration transferred | $ 26,625 us-gaap_BusinessCombinationConsiderationTransferred1 |
Common And Restricted Shares |  |
Business Acquisition [Line Items] |  |
BTU common shares and restricted stock units exchanged | 9,681 us-gaap_ConversionOfStockSharesConverted1 / us-gaap_BusinessAcquisitionAxis = asys_BTUInternationalIncBTUMergerMember / us-gaap_StatementClassOfStockAxis = asys_CommonAndRestrictedSharesMember |
Stock Options |  |
Business Acquisition [Line Items] |  |
BTU common shares and restricted stock units exchanged | 500 us-gaap_ConversionOfStockSharesConverted1 / us-gaap_BusinessAcquisitionAxis = asys_BTUInternationalIncBTUMergerMember / us-gaap_StatementClassOfStockAxis = us-gaap_EmployeeStockOptionMember |

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- Definition Conversion Of Stock, Conversion Ratio, Shares Of Stock Exchanged Per Each Share Of Subsidiary Stock + References No definition available. + Details
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- Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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