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Selected Quarterly Data (Unaudited) | 12 Months Ended
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Sep. 30, 2011
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Data (Unaudited) | Selected Quarterly Data (Unaudited)
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
Fiscal Year 2011: | (in thousands, except per share amounts)
Revenue | $ | 53,712 |  |  | $ | 61,253 |  |  | $ | 71,871 |  |  | $ | 59,868 |
Gross margin | $ | 19,597 |  |  | $ | 24,703 |  |  | $ | 26,116 |  |  | $ | 20,242 |
Provision for income taxes | $ | 3,330 |  |  | $ | 5,100 |  |  | $ | 5,160 |  |  | $ | 2,600 |
Net income attributable to Amtech Systems, Inc. | $ | 4,992 |  |  | $ | 7,517 |  |  | $ | 7,298 |  |  | $ | 3,075 |
Comprehensive income attributable to Amtech Systems, Inc. | $ | 3,539 |  |  | $ | 11,430 |  |  | $ | 8,744 |  |  | $ | (1,927 | )
Net income per share attributable to Amtech Systems, Inc.: |  |  |  |  |  |  |
Basic | $ | 0.54 |  |  | $ | 0.79 |  |  | $ | 0.76 |  |  | $ | 0.32 |
Shares used in calculation | 9,278 |  |  | 9,487 |  |  | 9,576 |  |  | 9,581 |
Diluted | $ | 0.52 |  |  | $ | 0.77 |  |  | $ | 0.74 |  |  | $ | 0.31 |
Shares used in calculation | 9,609 |  |  | 9,781 |  |  | 9,852 |  |  | 9,778 |
Fiscal Year 2010: | (in thousands, except per share amounts)
Revenue | $ | 15,457 |  |  | $ | 16,077 |  |  | $ | 43,072 |  |  | $ | 45,413 |
Gross margin | $ | 4,600 |  |  | $ | 4,708 |  |  | $ | 15,752 |  |  | $ | 17,652 |
Provision for income taxes | $ | 50 |  |  | $ | 140 |  |  | $ | 2,330 |  |  | $ | 3,630 |
Net income | $ | 80 |  |  | $ | 206 |  |  | $ | 3,876 |  |  | $ | 5,401 |
Comprehensive income attributable to Amtech Systems, Inc. | $ | (568 | ) |  | $ | (1,967 | ) |  | $ | 257 |  |  | $ | 10,198 |
Net income per share: |  |  |  |  |  |  |
Basic | $ | 0.01 |  |  | $ | 0.02 |  |  | $ | 0.43 |  |  | $ | 0.6 |
Shares used in calculation | 8,972 |  |  | 9,018 |  |  | 9,021 |  |  | 9,077 |
Diluted | $ | 0.01 |  |  | $ | 0.02 |  |  | $ | 0.42 |  |  | $ | 0.58 |
Shares used in calculation | 9,059 |  |  | 9,239 |  |  | 9,231 |  |  | 9,376 |

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 28 -Paragraph 23, 24 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 28 -Paragraph 30 -Subparagraph a-j -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=6952194&loc=d3e1280-108306 + Details
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