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Note 15 Stock-Based Compensation (Tables)
12 Months Ended
Oct. 03, 2015
Share-based Compensation [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
 
Year Ended
 
October 3,
2015
 
September 27,
2014
 
September 28,
2013
 
(In thousands)
Stock options
$
9,894

 
$
9,820

 
$
10,506

Restricted stock units
10,759

 
8,969

 
7,018

Total
$
20,653

 
$
18,789

 
$
17,524

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
 
Year Ended
 
October 3,
2015
 
September 27,
2014
 
September 28,
2013
 
(In thousands)
Cost of sales
$
6,611

 
$
5,849

 
$
5,464

Selling, general & administrative
13,859

 
12,861

 
11,942

Research & development
183

 
79

 
118

Total
$
20,653

 
$
18,789

 
$
17,524

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
 
Year Ended
 
October 3,
2015
 
September 27,
2014
 
September 28,
2013
Volatility
52.9
%
 
67.6
%
 
86.0
%
Risk-free interest rate
1.6
%
 
1.5
%
 
0.7
%
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 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

Granted
567

 
24.48

 
 
 
 
Exercised/Cancelled/Forfeited/Expired
(1,715
)
 
16.13

 
 
 
 
Outstanding as of October 3, 2015
7,033

 
13.05

 
4.94
 
53,938

Vested and expected to vest as of October 3, 2015
6,942

 
12.97

 
4.89
 
53,609

Exercisable as of October 3, 2015
5,917

 
12.25

 
4.33
 
48,655

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
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-$6.89
 
794

 
3.59
 
3.55

 
793

 
3.55

$6.90-$8.69
 
774

 
6.45
 
8.47

 
513

 
8.48

$8.70-$8.81
 
1,350

 
4.83
 
8.76

 
1,323

 
8.76

$8.82-$11.57
 
920

 
5.45
 
10.56

 
837

 
10.54

$11.58-$15.76
 
959

 
5.69
 
13.86

 
732

 
13.40

$15.77-$21.11
 
496

 
5.88
 
16.51

 
468

 
16.44

$21.12-$28.20
 
1,740

 
4.01
 
22.62

 
1,251

 
21.89

$1.50-$28.20
 
7,033

 
4.94
 
13.05

 
5,917

 
12.25

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 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

Granted
966

 
23.42

 
 
 
 
Vested/Forfeited/Cancelled
(328
)
 
13.79

 
 
 
 
Outstanding as of October 3, 2015
2,979

 
16.52

 
1.52
 
59,843

Expected to vest as of October 3, 2015
2,739

 
16.28

 
1.44
 
39,386