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Stock-Based Compensation (Tables) | 6 Months Ended
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Mar. 29, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock-Based Compensation Expense in Consolidated Statements of Operations | The following presents stock-based compensation expense in the Company’s Consolidated Statements of Operations:
|  | Three Months Ended |  |  | Six Months Ended |
|  | March 29, 2014 |  |  | March 30, 2013 |  |  | March 29, 2014 |  |  | March 30, 2013 |
Cost of revenues |  | $ | 2,133 |  |  | $ | 1,723 |  |  | $ | 3,643 |  |  | $ | 3,557 |
Research and development |  |  | 2,224 |  |  |  | 2,015 |  |  |  | 4,097 |  |  |  | 3,883 |
Selling and marketing |  |  | 2,352 |  |  |  | 2,567 |  |  |  | 4,101 |  |  |  | 4,768 |
General and administrative |  |  | 5,663 |  |  |  | 5,739 |  |  |  | 9,496 |  |  |  | 11,680 |
Restructuring and divestiture |  |  | — |  |  |  | 6,969 |  |  |  | 4,761 |  |  |  | 7,191 |
|  | $ | 12,372 |  |  | $ | 19,013 |  |  | $ | 26,098 |  |  | $ | 31,079 |
Weighted-Average Assumptions Utilized to Value Stock Options | The Company uses a binomial model to determine the fair value of its stock options. The weighted-average assumptions utilized to value these stock options are indicated in the following table:
|  | Three Months Ended |  |  | Six Months Ended |
|  | March 29, 2014 |  |  | March 30, 2013 |  |  | March 29, 2014 |  |  | March 30, 2013 |
Risk-free interest rate |  |  | 1.3 | % |  |  | 0.5 | % |  |  | 1.2 | % |  |  | 0.5 | %
Expected volatility |  |  | 41.4 | % |  |  | 43.7 | % |  |  | 41.4 | % |  |  | 43.7 | %
Expected life (in years) |  |  | 4.5 |  |  |  | 4.4 |  |  |  | 4.4 |  |  |  | 4.4 |
Dividend yield |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Weighted average fair value of options granted |  | $ | 7.82 |  |  | $ | 5.83 |  |  | $ | 7.65 |  |  | $ | 6.99 |

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- Definition Schedule of share-based compensation expense. + References No definition available. + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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