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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2015
Share-based Compensation [Abstract]  
Schedule Of Stock Option Plans Activity
Additional information relating to the Company’s stock option plans follows:
 
2015
 
2014
 
2013
Options outstanding at beginning of year
298

 
425

 
995

Options granted
—

 
—

 
—

Options exercised
(66
)
 
(108
)
 
(561
)
Options forfeited and expired
(63
)
 
(19
)
 
(9
)
Options outstanding at end of year
169

 
298

 
425

Options exercisable at end of year
164

 
257

 
343

Option prices per share:
 
 
 
 
 
Options granted during the year
$
—

 
—

 
—

Options exercised during the year
$ 28.37-93.65

 
28.37-93.65

 
28.37-93.65

Options forfeited and expired during the year
$ 28.37-88.33

 
46.80-93.65

 
48.50-88.33

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
Summary Of The Stock Options Under The 2007 Plan
A summary of the Company’s options under the 2002, 2007 and 2012 Plans as of December 31, 2015, 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, 2014
298

 
$
68.63

 
 
 
 
Granted
—

 
—

 
 
 
 
Exercised
(66
)
 
73.33

 
 
 
 
Forfeited and expired
(63
)
 
82.20

 
 
 
 
Options outstanding, December 31, 2015
169

 
$
61.73

 
4.7
 
$
21,496

Vested and expected to vest as of December 31, 2015
168

 
$
61.73

 
4.7
 
$
21,492

Exercisable as of December 31, 2015
164

 
$
61.73

 
4.6
 
$
20,986
Summary Of Stock Options By Exercise Price Range
The following table summarizes information about the Company’s stock options outstanding as of December 31, 2015:
 
Outstanding
 
Exercisable
Exercise price range
Number of
shares
 
Average
life
 
Average
price
 
Number of
shares
 
Average
price
$28.37-$28.37
14,725

 
3.1
 
$
28.37

 
14,725

 
$
28.37

$46.80-$46.80
12,317

 
4.1
 
46.80

 
12,317

 
46.80

$57.34-$57.34
45,782

 
5.2
 
57.34

 
43,782

 
57.34

$66.14-$66.14
68,913

 
6.1
 
66.14

 
66,913

 
66.14

$74.47-$74.47
7,500

 
2.1
 
74.47

 
7,500

 
74.47

$75.09-$75.09
2,250

 
1.0
 
75.09

 
2,250

 
75.09

$83.50-$83.50
9,150

 
0.1
 
83.50

 
9,150

 
83.50

$93.65-$93.65
7,750

 
1.1
 
93.65

 
7,750

 
93.65

Total
168,387

 
4.7
 
$
61.73

 
164,387

 
$
61.73
Summary Of RSUs Under The 2007 Plan
A summary of the Company’s RSUs under the 2007 and 2012 Plans as of December 31, 2015, 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, 2014
725

 
$
77.84

 

 

Granted
248

 
141.90

 

 

Released
(212
)
 
180.64

 

 

Forfeited
(11
)
 
69.96

 

 

Restricted Stock Units outstanding, December 31, 2015
750

 
$
84.67

 
1.8
 
$
131,028

Expected to vest as of December 31, 2015
731

 


 
1.7
 
$
127,444
Additional Information For RSUs Under The 2007 Plan
Additional information relating to the Company’s RSUs under the 2007 and 2012 Plans is as follows:
 
2015
 
2014
 
2013
Restricted Stock Units outstanding, January 1
725

 
733

 
605

Granted
248

 
189

 
301

Released
(212
)
 
(189
)
 
(152
)
Forfeited
(11
)
 
(8
)
 
(21
)
Restricted Stock Units outstanding, December 31
750

 
725

 
733

Expected to vest as of December 31
731

 
691

 
683