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Quarterly Results of Operations (Unaudited) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2012 | May 31, 2012 | Feb. 29, 2012 | Nov. 30, 2011 | Aug. 31, 2011 | May 31, 2011 | Feb. 28, 2011 | Nov. 30, 2010 | Aug. 31, 2012 | Aug. 31, 2011 | Aug. 31, 2010
Quarterly Results of Operations (Unaudited) |  |  |  |  |  |  |  |  |  |  |
Revenues, net | $ 5,469,000 | $ 9,178,000 | $ 7,905,000 | $ 6,747,000 | $ 5,329,000 | $ 5,600,000 | $ 9,957,000 | $ 13,016,000 | $ 29,299,000 | $ 33,902,000 | $ 35,763,000
Cost of revenues | 8,473,000 | 10,232,000 | 8,627,000 | 7,569,000 | 10,306,000 | 5,124,000 | 7,628,000 | 6,376,000 | 34,901,000 | 29,434,000 | 19,640,000
Gross profit (loss) | (3,004,000) | (1,054,000) | (722,000) | (822,000) | (4,977,000) | 476,000 | 2,329,000 | 6,640,000 | (5,602,000) | 4,468,000 | 16,123,000
Operating expenses | 13,160,000 | 6,928,000 | 5,068,000 | 5,594,000 | 7,158,000 | 4,370,000 | 2,936,000 | 1,734,000 | 30,750,000 | 16,198,000 | 4,954,000
Income (loss) from operations | (16,164,000) | (7,982,000) | (5,790,000) | (6,416,000) | (12,135,000) | (3,894,000) | (607,000) | 4,906,000 | (36,352,000) | (11,730,000) | 11,169,000
Equity in losses from unconsolidated entities, net | (8,744,000) | (2,173,000) | (1,176,000) | (1,526,000) | (1,124,000) | (1,105,000) | (675,000) | (222,000) | (13,619,000) | (3,126,000) | (313,000)
Income tax expense (benefit) |  |  |  |  | 678,000 | (10,000) | (219,000) | 276,000 |  | 725,000 | 267,000
Net income (loss) attributable to SemiLEDs stockholders | (24,619,000) | (10,003,000) | (7,114,000) | (7,721,000) | (13,633,000) | (5,123,000) | (1,168,000) | 3,820,000 | (49,457,000) | (16,104,000) | 10,828,000
Net income (loss) per share attributable to SemiLEDs common stockholders: |  |  |  |  |  |  |  |  |  |  |
Net income (loss) per share attributable to SemiLEDs common stockholders, basic and diluted | $ (0.90) | $ (0.36) | $ (0.26) | $ (0.28) | $ (0.50) | $ (0.19) | $ (0.05) | $ 0.11 | $ (1.80) | $ (0.88) |
Excess capacity charge as a result of a decrease in customer demand | 2,000,000 | 1,600,000 |  |  |  |  |  |  |  |  |
Inventory write-down | 800,000 | 700,000 |  |  | 4,300,000 |  |  |  | 3,148,000 | 5,793,000 | 40,000
Potential litigation settlement associated with the Cree litigation |  | 1,500,000 |  |  |  |  |  |  | 1,500,000 |  |
Impairment of long-lived assets | 7,500,000 |  |  |  |  |  |  |  | 7,507,000 |  |
Quarterly Results of Operations |  |  |  |  |  |  |  |  |  |  |
Net loss reported by China SemiLEDs | (8,744,000) | (2,173,000) | (1,176,000) | (1,526,000) | (1,124,000) | (1,105,000) | (675,000) | (222,000) | (13,619,000) | (3,126,000) | (313,000)
Increase in bad debt expense | 1,400,000 |  |  |  | 1,100,000 |  |  |  |  |  |
Increase in valuation allowance on net deferred tax assets |  |  |  |  | 600,000 |  |  |  | 0 | 584,000 | (1,163,000)
China SemiLEDs |  |  |  |  |  |  |  |  |  |  |
Quarterly Results of Operations (Unaudited) |  |  |  |  |  |  |  |  |  |  |
Equity in losses from unconsolidated entities, net | 8,700,000 | 2,100,000 |  |  |  |  |  |  |  |  |
Quarterly Results of Operations |  |  |  |  |  |  |  |  |  |  |
Net loss reported by China SemiLEDs | 8,700,000 | 2,100,000 |  |  |  |  |  |  |  |  |
Increase in bad debt expense |  |  |  |  |  |  |  |  | $ 1,405,000 |  |

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