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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Aug. 31, 2012
Summary of Significant Accounting Policies |
Cash, cash equivalents and Short-term Investments by location |
Cash, Cash Equivalents and Short-term Investments by Location |  | August 31, 2012 |  | August 31, 2011 |
--- | --- | --- | --- | --- | ---
United States; |  |  |  |  |  |  |
Denominated in U.S. dollars |  | $ | 18,744 |  | $ | 75,348 |
Taiwan; |  |  |  |  |  |  |
Denominated in U.S. dollars |  |  | 34,477 |  |  | 3,382 |
Denominated in New Taiwan dollars |  |  | 2,193 |  |  | 4,669 |
Denominated in other currencies |  |  | 235 |  |  | 119 |
China (including Hong Kong); |  |  |  |  |  |  |
Denominated in U.S. dollars |  |  | 376 |  |  | 100 |
Denominated in Renminbi |  |  | 33 |  |  | — |
Denominated in H.K. dollars |  |  | 1 |  |  | 1 |
Total cash, cash equivalents and short-term investments |  | $ | 56,059 |  | $ | 83,619 |
Concentration of Credit Risk |
Schedule of cash and cash equivalents by location |
Cash and Cash Equivalents |  | August 31, 2012 |  | August 31, 2011 |
--- | --- | --- | --- | --- | ---
Cash; |  |  |  |  |  |  |
Cash and demand deposits |  | $ | 36,218 |  | $ | 76,619 |
Cash equivalents; |  |  |  |  |  |  |
Time deposits |  |  | 6,000 |  |  | — |
Certificates of deposits |  |  | — |  |  | 2,000 |
Money market funds |  |  | 5,010 |  |  | 5,000 |
Total cash and cash equivalents |  | $ | 47,228 |  | $ | 83,619 |
Schedule of estimated useful lives of property, plant and equipment |
Buildings and improvements |  | 5 to 20 years
Machinery and equipment |  | 2 to 10 years
Leasehold improvements |  | 1 to 10 years
Other equipment |  | 2 to 6 years
Schedule of estimated useful lives of finite-lived intangible assets |
Patents and trademarks |  | 3 to 25 years
Acquired technology |  | 4 years
Customer relationships |  | 5 years
Accounts receivable | Customer concentration risk |
Concentration of Credit Risk |
Schedule of customers accounting for 10% or more |
Customers |  | August 31, 2012 |  | August 31, 2011 |
--- | --- | --- | --- | --- | ---
Customer A |  |  | 15 | % |  | — |
Customer B |  |  | 11 | % |  | 10 | %
Customer C |  |  | — |  |  | 15 | %
Revenues | Customer concentration risk |
Concentration of Credit Risk |
Schedule of customers accounting for 10% or more |
|  | Years Ended August 31, |
--- | --- | --- | ---
|  | 2012 |  | 2011 |  | 2010 |
Customers |  | Amount |  | % of Revenues |  | Amount |  | % of Revenues |  | Amount |  | % of Revenues |
Customer A |  | $ | 7,176 |  |  | 24 | % | $ | — |  |  | — |  | $ | — |  |  | — |
Customer B |  | $ | 764 |  |  | 3 | % | $ | 1,993 |  |  | 6 | % | $ | 6,955 |  |  | 20 | %
Customer C |  | $ | 8 |  |  | 0 | % | $ | 3,936 |  |  | 12 | % | $ | 2,012 |  |  | 6 | %

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