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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2012
Share-based Compensation [Abstract]  
Schedule Of Stock Option Plans Activity
Additional information relating to the Company’s stock option plans follows:
 
2012
 
2011
 
2010
Options outstanding at beginning of year
1,305

 
1,371

 
1,481

Options granted
83

 
76

 
40

Options exercised
(277
)
 
(82
)
 
(74
)
Options forfeited and expired
(116
)
 
(60
)
 
(76
)
Options outstanding at end of year
995

 
1,305

 
1,371

Options exercisable at end of year
814
 
1,106

 
1,160

Option prices per share:
 
 
 
 
 
Options granted during the year
66.14

 
57.34

 
46.80

Options exercised during the year
28.37-88.33

 
 28.37-63.14

 
 16.66-57.88

Options forfeited and expired during the year
46.80-93.65

 
 28.37-93.65

 
 22.63-93.65

Options outstanding at end of year
28.37-93.65

 
 28.37-93.65

 
 28.37-93.65

Options exercisable at end of year
28.37-93.65

 
 28.37-93.65

 
 28.37-93.65
Assumptions Used In Fair Value Valuation Of Option Awards
The risk-free rate is based on U.S. Treasury yields in effect at the time of the grant for the expected term of the award.
 
2012
 
2011
 
2010
Dividend yield
—

 
—

 
—

Risk-free interest rate
1.0
%
 
2.0
%
 
2.3
%
Volatility
47.1
%
 
48.1
%
 
45.2
%
Expected life (years)
5

 
5

 
5
Summary Of The Stock Options Under The 2007 Plan
A summary of the Company’s options under the 2002 and 2007 Plan as of December 31, 2012, and changes during the year then ended is presented as follows:
 
Shares
 
Weighted
average
exercise
price
 
Weighted
average
remaining
contractual
term (years)
 
Aggregate
intrinsic
value
Options outstanding, December 31, 2011
1,305

 
$
72.08

 
 
 
 
Granted
83

 
66.14

 
 
 
 
Exercised
(277
)
 
60.76

 
 
 
 
Forfeited and expired
(116
)
 
70.93

 
 
 
 
Options outstanding, December 31, 2012
995

 
74.87

 
3.9
 
$
15,643

Vested and expected to vest as of December 31, 2012
989

 
$
74.95

 
3.9
 
$
15,453

Exercisable as of December 31, 2012
814

 
$
77.78

 
3.0
 
$
10,437
Summary Of Stock Options By Exercise Price Range
The following table summarizes information about the Company’s stock options outstanding as of December 31, 2012:
 
Outstanding
 
Exercisable
Exercise price range
Number of
shares
 
Average
life
 
Average
price
 
Number of
shares
 
Average
price
Under $57.34
171

 
6.4
 
$
47.90

 
98

 
$
44.34

$57.88-$73.45
197

 
4.4
 
69.97

 
115

 
72.75

$73.54-$81.40
162

 
4.7
 
74.91

 
136

 
74.99

$81.90-$86.51
167

 
2.8
 
83.16

 
167

 
83.16

$87.87-$88.00
35

 
2.8
 
87.96

 
35

 
87.96

$88.33-$93.65
263

 
2.3
 
89.08

 
263

 
89.08

Total
995

 
3.9
 
$
74.87

 
814

 
$
77.78
Summary Of RSUs Under The 2007 Plan
A summary of the Company’s RSUs under the 2007 Plan as of December 31, 2012, and changes during the year then ended is presented as follows:
 
Shares
 
Weighted
average price
 
Weighted
average
remaining
contractual
term (years)
 
Aggregate
intrinsic value
Restricted Stock Units outstanding, December 31, 2011
495

 
$
50.76

 

 

Granted
260

 
65.98

 

 

Released
(140
)
 
43.55

 

 

Forfeited
(10
)
 
59.07

 

 

Restricted Stock Units outstanding, December 31, 2012
605

 
57.87

 
2.3
 
$
54,774

Expected to vest as of December 31, 2012
551

 


 
2.1
 
$
49,872
Additional Information For RSUs Under The 2007 Plan
Additional information relating to the Company’s RSUs under the 2007 Plan is as follows:
 
2012
 
2011
 
2010
Restricted Stock Units outstanding, January 1
495

 
404

 
359

Granted
260

 
196

 
149

Released
(140
)
 
(91
)
 
(95
)
Forfeited
(10
)
 
(14
)
 
(9
)
Restricted Stock Units outstanding, December 31
605

 
495

 
404

Expected to vest as of December 31
551

 
438

 
343