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Note 11 Stock-Based Compensation (Tables)
3 Months Ended
Dec. 29, 2012
Share-based Compensation [Abstract]  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
 
Three Months Ended
 
December 29,
2012
 
December 31,
2011
 
(In thousands)
Cost of sales
$
1,340

 
$
907

Selling, general and administrative
3,295

 
3,130

Research and development
31

 
27

  Total
$
4,666

 
$
4,064

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
 
Three Months Ended
 
December 29, 2012
 
December 31, 2011
 
(In thousands)
Stock options
$
2,617

 
$
2,455

Restricted stock units
2,049

 
1,609

  Total
$
4,666

 
$
4,064

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
 
Three Months Ended
 
December 29,
2012
 
December 31,
2011
Volatility
86.2
%
 
85.4
%
Risk-free interest rate
0.7
%
 
1.0
%
Dividend yield
%
 
%
Expected life of options (years)
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

 
Aggregate
Intrinsic
Value of
In-The-Money
Options
($)
 
(In thousands)
 
 
 
 
 
(In thousands)
Outstanding, September 29, 2012
11,275

 
13.15

 
6.54
 
18,548

Granted
900

 
8.54

 
 
 
 
Exercised/Cancelled/Forfeited/Expired
(366
)
 
8.97

 
 
 
 
Outstanding, December 29, 2012
11,809

 
12.93

 
6.57
 
23,083

Vested and expected to vest, December 29, 2012
11,286

 
13.07

 
6.46
 
22,477

Exercisable, December 29, 2012
7,958

 
14.56

 
5.57
 
17,045

Schedule of Restricted Stock Units Award Activity [Table Text Block]
 
Number of
Shares
 
Weighted-
Average Grant Date
Fair Value
($)
 
Weighted-
Average
Remaining
Contractual
Term

 
Aggregate
Intrinsic
Value
($)
 
(In thousands)
 
 
 
 
 
(In thousands)
Outstanding, September 29, 2012
2,230

 
9.51

 
1.08
 
21,272

Granted
760

 
8.53

 
 
 
 
Vested/Cancelled
(1,384
)
 
7.30

 
 
 
 
Outstanding, December 29, 2012
1,606

 
10.94

 
2.56
 
16,561

Expected to vest, December 29, 2012
963

 
11.85

 
1.84
 
9,931