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Stock-based Compensation (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified |  | 3 Months Ended | 1 Months Ended
--- | --- | --- | ---
Aug. 31, 2010 item | Nov. 30, 2012 Employees, directors and consultants | Nov. 30, 2011 Employees, directors and consultants | Nov. 30, 2012 Employees, directors and consultants Cost of revenues | Nov. 30, 2011 Employees, directors and consultants Cost of revenues | Nov. 30, 2012 Employees, directors and consultants Research and development | Nov. 30, 2011 Employees, directors and consultants Research and development | Nov. 30, 2012 Employees, directors and consultants Selling, general and administrative | Nov. 30, 2011 Employees, directors and consultants Selling, general and administrative | Sep. 30, 2012 Employees, directors and consultants Stock options and stock units | Sep. 30, 2012 Executive officer Stock options
Stock-based Compensation |  |  |  |  |  |  |  |  |  |  |
Number of share-based compensation plans | 1 |  |  |  |  |  |  |  |  |  |
Stock-based Compensation |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  | $ 336 | $ 651 | $ 183 | $ 170 | $ 94 | $ 49 | $ 59 | $ 432 |  |
Options granted of common stock (in shares) |  |  |  |  |  |  |  |  |  |  | 100
Exercise price (in dollars per share) |  |  |  |  |  |  |  |  |  |  | $ 1.72
Vesting period |  |  |  |  |  |  |  |  |  | 4 years |
Vesting percentage on each anniversary of the vesting start date of awards granted |  |  |  |  |  |  |  |  |  | 25.00% |
Contractual term |  |  |  |  |  |  |  |  |  | 10 years |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -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 FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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