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Note 12 Stock-Based Compensation (Tables) | 12 Months Ended
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Sep. 27, 2014
Share-based Compensation [Abstract] |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
| Year Ended
| September 27, 2014 |  | September 28, 2013 |  | September 29, 2012
| (In thousands)
Stock options | $ | 9,820 |  |  | $ | 10,506 |  |  | $ | 10,084 |
Restricted stock units | 8,969 |  |  | 7,018 |  |  | 7,915 |
Total | $ | 18,789 |  |  | $ | 17,524 |  |  | $ | 17,999 |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
| Year Ended
| September 27, 2014 |  | September 28, 2013 |  | September 29, 2012
| (In thousands)
Cost of sales | $ | 5,849 |  |  | $ | 5,464 |  |  | $ | 4,504 |
Selling, general & administrative | 12,861 |  |  | 11,942 |  |  | 13,363 |
Research & development | 79 |  |  | 118 |  |  | 132 |
Total | $ | 18,789 |  |  | $ | 17,524 |  |  | $ | 17,999 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
| Year Ended
| September 27, 2014 |  | September 28, 2013 |  | September 29, 2012
Volatility | 67.6 | % |  | 86.0 | % |  | 85.8 | %
Risk-free interest rate | 1.5 | % |  | 0.7 | % |  | 0.9 | %
Dividend yield | — |  |  | — |  |  | — |
Expected life of options | 5.0 |  |  | 5.0 |  |  | 5.0 |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
| Number of Shares |  | Weighted-Average Exercise Price ($) |  | Weighted-Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value of In-The-Money Options ($)
| (In thousands) |  |  |  |  |  | (In thousands)
Outstanding as of October 1, 2011 | 10,922 |  |  | 13.85 |  |  | 6.89 |  | 14,195 |
Granted | 1,775 |  |  | 9.61 |  |  |  |  |
Exercised/Cancelled/Forfeited/Expired | (1,422 | ) |  | 14.08 |  |  |  |  |
Outstanding as of September 29, 2012 | 11,275 |  |  | 13.15 |  |  | 6.54 |  | 18,548 |
Granted | 975 |  |  | 8.83 |  |  |  |  |
Exercised/Cancelled/Forfeited/Expired | (2,688 | ) |  | 13.36 |  |  |  |  |
Outstanding as of September 28, 2013 | 9,562 |  |  | 12.65 |  |  | 5.99 |  | 62,825 |
Granted | 648 |  |  | 15.89 |  |  |  |  |
Exercised/Cancelled/Forfeited/Expired | (2,029 | ) |  | 12.67 |  |  |  |  |
Outstanding as of September 27, 2014 | 8,181 |  |  | 12.90 |  |  | 5.30 |  | 93,767 |
Vested and expected to vest as of September 27, 2014 | 8,029 |  |  | 12.93 |  |  | 5.25 |  | 91,888 |
Exercisable as of September 27, 2014 | 6,539 |  |  | 13.22 |  |  | 4.60 |  | 73,555 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] | The following table summarizes information regarding stock options outstanding at September 27, 2014:
Options Outstanding |  | Options Vested and Exercisable
Range of Weighted Exercise Prices |  | Number Outstanding |  | Weighted Average Remaining Contractual Life (Years) |  | Weighted Average Exercise Price ($) |  | Number Exercisable |  | Weighted Average Exercise Price ($)
|  | (In thousands) |  |  |  |  |  | (In thousands) |  |
$1.50-$7.30 |  | 1,158 |  |  | 4.69 |  | 3.66 |  |  | 1,142 |  |  | 3.62 |
$7.31-$8.76 |  | 1,416 |  |  | 7.28 |  | 8.57 |  |  | 715 |  |  | 8.60 |
$8.77-$10.80 |  | 1,563 |  |  | 5.88 |  | 9.37 |  |  | 1,293 |  |  | 9.11 |
$10.81-$15.76 |  | 1,561 |  |  | 6.36 |  | 12.99 |  |  | 1,087 |  |  | 12.14 |
$15.77-$21.11 |  | 620 |  |  | 6.79 |  | 16.42 |  |  | 446 |  |  | 16.34 |
$21.12-$21.41 |  | 1,204 |  |  | 2.67 |  | 21.12 |  |  | 1,204 |  |  | 21.12 |
$21.42-$53.28 |  | 659 |  |  | 1.69 |  | 28.25 |  |  | 652 |  |  | 28.32 |
$1.50-$53.28 |  | 8,181 |  |  | 5.30 |  | 12.90 |  |  | 6,539 |  |  | 13.22 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] |
| Number of Shares |  | Weighted Grant-Date Fair Value Per Share ($) |  | Weighted-Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value ($)
| (In thousands) |  |  |  |  |  | (In thousands)
Outstanding as of October 1, 2011 | 1,838 |  |  | 11.42 |  |  | 1.63 |  | 14,249 |
Granted | 790 |  |  | 6.16 |  |  |  |  |
Vested/Forfeited/Cancelled | (398 | ) |  | 11.69 |  |  |  |  |
Outstanding as of September 29, 2012 | 2,230 |  |  | 9.51 |  |  | 1.08 |  | 21,272 |
Granted | 1,167 |  |  | 9.42 |  |  |  |  |
Vested/Forfeited/Cancelled | (1,629 | ) |  | 7.93 |  |  |  |  |
Outstanding as of September 28, 2013 | 1,768 |  |  | 10.90 |  |  | 2.02 |  | 31,052 |
Granted | 1,204 |  |  | 17.16 |  |  |  |  |
Vested/Forfeited/Cancelled | (631 | ) |  | 13.99 |  |  |  |  |
Outstanding as of September 27, 2014 | 2,341 |  |  | 13.29 |  |  | 2.01 |  | 56,064 |
Expected to vest as of September 27, 2014 | 1,628 |  |  | 13.59 |  |  | 1.88 |  | 38,984 |

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: 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 2: 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=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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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