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Stock Plans (Tables)
12 Months Ended
Jan. 01, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Total Compensation Recognized Related to Outstanding Equity Awards
The following table summarizes total pre-tax compensation expense recognized related to the Company’s stock options, restricted stock, restricted stock units, performance units and stock grants, net of estimated forfeitures, included in the Company’s consolidated statements of operations for fiscal years 2011, 2010, and 2009:
 
 
January 1,
2012
 
January 2,
2011
 
January 3,
2010
 
(In thousands)
Cost of product and service revenue
$
1,139

 
$
882

 
$
1,173

Research and development expenses
583

 
518

 
413

Selling, general and administrative and other expenses
13,760

 
11,151

 
11,202

Continuing operations stock-based compensation expense
15,482

 
12,551

 
12,788

Discontinued operations stock-based compensation expense

 
1,214

 
1,048

Total stock-based compensation expense
$
15,482

 
$
13,765

 
$
13,836

Weighted-Average Assumptions Used in the Black-Scholes Option Pricing Model
. The Company’s weighted-average assumptions used in the Black-Scholes option pricing model are as follows for the fiscal years ended:
 
 
January 1,
2012
 
January 2,
2011
 
January 3,
2010
Risk-free interest rate
1.9
%
 
1.8
%
 
1.6
%
Expected dividend yield
1.1
%
 
1.4
%
 
1.9
%
Expected lives
4 years

 
4 years

 
4 years

Expected stock volatility
38.1
%
 
37.5
%
 
35.0
%

Summary of Stock Option Activity


The following table summarizes stock option activity for the three fiscal years ended January 1, 2012:
 
 
January 1, 2012
 
January 2, 2011
 
January 3, 2010
 
Number
of
Shares
 
Weighted-
Average
Price
 
Number
of
Shares
 
Weighted-
Average
Price
 
Number
of
Shares
 
Weighted-
Average
Price
 
(Shares in thousands)
Outstanding at beginning of year
6,983

 
$
21.86

 
8,415

 
$
21.27

 
9,424

 
$
24.81

Granted
847

 
24.20

 
784

 
21.16

 
2,254

 
13.26

Exercised
(1,138
)
 
20.86

 
(1,543
)
 
18.82

 
(459
)
 
13.59

Canceled
(1,237
)
 
30.29

 
(267
)
 
25.19

 
(2,601
)
 
28.50

Forfeited
(109
)
 
18.27

 
(406
)
 
17.67

 
(203
)
 
21.27

Outstanding at end of year
5,346

 
$
20.57

 
6,983

 
$
21.86

 
8,415

 
$
21.27

Exercisable at end of year
3,549

 
$
20.74

 
4,787

 
$
23.78

 
4,909

 
$
23.95


Summary of Restricted Stock Award Activity
The following table summarizes the restricted stock awards activity for the three fiscal years ended January 1, 2012:
 
 
January 1, 2012
 
January 2, 2011
 
January 3, 2010
 
Number
of
Shares
 
Weighted-
Average
Grant-
Date Fair
Value
 
Number
of
Shares
 
Weighted-
Average
Grant-
Date Fair
Value
 
Number
of
Shares
 
Weighted-
Average
Grant-
Date Fair
Value
 
(Shares in thousands)
Nonvested at beginning of year
578

 
$
22.00

 
451

 
$
22.49

 
321

 
$
24.54

Granted
460

 
26.31

 
413

 
21.20

 
283

 
13.24

Vested
(272
)
 
23.96

 
(147
)
 
20.45

 
(118
)
 
15.45

Forfeited
(94
)
 
24.58

 
(139
)
 
21.17

 
(35
)
 
23.80

Nonvested at end of year
672

 
$
23.62

 
578

 
$
22.00

 
451

 
$
22.49