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Selected Quarterly Data (Unaudited) (Tables) | 12 Months Ended
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Sep. 30, 2015
Selected Quarterly Data (Unaudited) [Abstract] |
Selected Quarterly Data (Unaudited) |
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
Fiscal Year 2015: | (in thousands, except per share amounts)
Revenue | $ | 12,396 |  |  | $ | 24,273 |  |  | $ | 40,016 |  |  | $ | 28,198 |
Gross margin | $ | 3,428 |  |  | $ | 6,889 |  |  | $ | 10,128 |  |  | $ | 6,563 |
Provision for income taxes | $ | 180 |  |  | $ | 170 |  |  | $ | 290 |  |  | $ | 1,270 |
Net income (loss) attributable to Amtech Systems, Inc. | $ | (5,195 | ) |  | $ | (2,321 | ) |  | $ | (1,604 | ) |  | $ | 1,349 |
Comprehensive income (loss) attributable to Amtech Systems, Inc. | $ | (6,247 | ) |  | $ | (4,470 | ) |  | $ | (1,344 | ) |  | $ | 1,414 |
Net income (loss) per share attributable to Amtech Systems, Inc.: |  |  |  |  |  |  |
Basic earnings per share | $ | (0.53 | ) |  | $ | (0.19 | ) |  | $ | (0.12 | ) |  | $ | 0.10 |
Shares used in calculation | 9,854 |  |  | 11,997 |  |  | 13,103 |  |  | 13,150 |
Diluted earnings per share | $ | (0.53 | ) |  | $ | (0.19 | ) |  | $ | (0.12 | ) |  | $ | 0.10 |
Shares used in calculation | 9,854 |  |  | 11,997 |  |  | 13,103 |  |  | 13,259 |
Fiscal Year 2014: |
Revenue | $ | 14,772 |  |  | $ | 12,717 |  |  | $ | 9,190 |  |  | $ | 19,822 |
Gross margin | $ | 4,535 |  |  | $ | 2,898 |  |  | $ | 1,631 |  |  | $ | 2,562 |
Provision for (benefit of) for income taxes | $ | 560 |  |  | $ | — |  |  | $ | 1,325 |  |  | $ | (645 | )
Net loss attributable to Amtech Systems, Inc. | $ | (794 | ) |  | $ | (3,751 | ) |  | $ | (5,257 | ) |  | $ | (3,245 | )
Comprehensive loss attributable to Amtech Systems, Inc. | $ | (66 | ) |  | $ | (3,756 | ) |  | $ | (5,568 | ) |  | $ | (4,892 | )
Net loss per share attributable to Amtech Systems, Inc.: |  |  |  |  |  |  |
Basic earnings per share | $ | (0.08 | ) |  | $ | (0.39 | ) |  | $ | (0.53 | ) |  | $ | (0.33 | )
Shares used in calculation | 9,560 |  |  | 9,679 |  |  | 9,843 |  |  | 9,846 |
Diluted earnings per share | $ | (0.08 | ) |  | $ | (0.39 | ) |  | $ | (0.53 | ) |  | $ | (0.33 | )
Shares used in calculation | 9,560 |  |  | 9,679 |  |  | 9,843 |  |  | 9,846 |

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- Definition Selected Quarterly Data (Unaudited) [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: 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=51825399&loc=d3e1280-108306 + Details
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