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Acquisitions (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 0 Months Ended | 12 Months Ended |  | 0 Months Ended | 12 Months Ended |
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Apr. 02, 2010 SBDI | Aug. 31, 2010 SBDI | Apr. 01, 2010 SBDI | Aug. 03, 2011 Ning Xiang | Aug. 31, 2011 Ning Xiang | Aug. 31, 2010 Ning Xiang | Aug. 03, 2011 Ning Xiang Customer relationships | Aug. 03, 2011 Ning Xiang Patents
Acquisitions |  |  |  |  |  |  |  |
Ownership interest acquired (as a percent) |  |  | 100.00% | 51.00% |  |  |  |
Total cash consideration |  |  | $ 933 | $ 3,500 |  |  |  |
Acquisition related costs | 15 |  |  | 53 |  |  |  |
Gain on acquisition | 349 |  |  |  |  |  |  |
Revenues recognized since acquisition date |  | 92 |  |  | 426 |  |  |
Net loss since acquisition date |  | 282 |  |  | 47 |  |  |
Unaudited pro forma results |  |  |  |  |  |  |  |
Revenues, net (unaudited) |  | 35,981 |  |  | 36,855 | 38,105 |  |
Net income (loss) (unaudited) |  | 10,226 |  |  | (16,702) | 11,058 |  |
Net income (loss) per share attributable to SemiLEDs common stockholders, basic (unaudited) (in dollars per share) |  | $ 0.28 |  |  | $ (0.90) | $ 0.27 |  |
Net income (loss) per share attributable to SemiLEDs common stockholders, diluted (unaudited) (in dollars per share) |  | $ 0.28 |  |  | $ (0.90) | $ 0.26 |  |
Fair value of the noncontrolling interests in Ning Xiang at the acquisition date |  |  |  |  |  |  |  |
Current assets |  |  |  | 3,661 |  |  |  |
Plant and equipment |  |  |  | 166 |  |  |  |
Other assets |  |  |  | 11 |  |  |  |
Purchased intangible assets |  |  |  |  |  |  | 1,379 | 24
Current liabilities |  |  |  | (1,257) |  |  |  |
Total identifiable net assets acquired |  |  |  | 3,984 |  |  |  |
Noncontrolling interests in Ning Xiang |  |  |  | (1,607) |  |  |  |
Goodwill |  |  |  | 1,106 |  |  |  |
Total cash purchase price |  |  |  | $ 3,483 |  |  |  |

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- Definition The net amount recognized as of the acquisition date for the aggregate assets, including goodwill, in excess of or less than the aggregate liabilities assumed, less the noncontrolling interest in the acquiree. This amount represents the recognized net assets acquired which are attributable to the parent which may also be viewed as the incremental amount of equity attributable to the parent resulting from the business combination. + References No definition available. + Details
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- Definition Amount of the excess of the fair value of acquired net assets over the cost of an acquired business after pro rata reduction of the amounts that otherwise would have been assigned to acquired assets except financial assets other than investments accounted for by the equity method, assets to be disposed of by sale, deferred tax assets, prepaid assets relating to pension and postretirement benefit plans, and other current assets. This amount is considered an extraordinary item and often referred to as negative goodwill. This element is gross of the related tax effect. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 44, 45, 46 -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. + Details
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