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Shareholders' Equity And Stock Incentive Plan Shareholders' Equity And Stock Incentive Plan (Tables)
 12 Months Ended
Dec. 31, 2013
Shareholders' Equity And Stock Incentive Plan [Abstract]  
Summary Of Stock Options Activity
Stock Options. No stock options were granted under the Incentive Plan during 2013, 2012 or 2011. The table below summarizes the activity for stock options for the three years ended December 31, 2013, 2012 and 2011:
 
 
Shares
 
Weighted-
Average
Exercise
Prices
 
Weighted-
Average
Remaining Life
(In years)
 
Aggregate
Intrinsic Value
(In millions)
For the Year Ended December 31, 2011
 
 
 
 
 
 
 
 
Outstanding, beginning of period
 
414,854

 
$6.10
 
 
 
 
Granted
 
—

 
—

 
 
 
 
Exercised
 
(151,500
)
 
$4.36
 
 
 
 
Forfeited
 
—

 
—

 
 
 
 
Outstanding, end of period
 
263,354

 
$7.11
 
 
 
 
Exercisable, end of period
 
263,354

 
$7.11
 
 
 
 
For the Year Ended December 31, 2012
 
 
 
 
 
 
 
 
Outstanding, beginning of period
 
263,354

 
$7.11
 
 
 
 
Granted
 
—

 
—

 
 
 
 
Exercised
 
(20,500
)
 
$5.50
 
 
 
 
Forfeited
 
—

 
—

 
 
 
 
Outstanding, end of period
 
242,854

 
$7.24
 
 
 
 
Exercisable, end of period
 
242,854

 
$7.24
 
 
 
 
For the Year Ended December 31, 2013
 
 
 
 
 
 
 
 
Outstanding, beginning of period
 
242,854

 
$7.24
 
 
 
 
Granted
 
—

 
—

 
 
 
 
Exercised
 
(206,501
)
 
$6.07
 
 
 
 
Forfeited
 
—

 
—

 
 
 
 
Outstanding, end of period
 
36,353

 
$13.91
 
1.1
 
$1.1
Exercisable, end of period
 
36,353

 
$13.91
 
1.1
 
$1.1
Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity
The table below summarizes the activity for SARs for the three years ended December 31, 2013, 2012 and 2011:
 
 
Shares
 
Weighted-
Average
Exercise
Prices
 
Weighted-
Average
Remaining Life
(In years)
 
Aggregate
Intrinsic Value
(In millions)
For the Year Ended December 31, 2011
 
 
 
 
 
 
 
 
Outstanding, beginning of period
 
700,749

 
$18.50
 
 
 
 
Granted
 
153,801

 
$37.99
 
 
 
 
Exercised
 
(4,768
)
 
$20.22
 
 
 
 
Forfeited
 
—

 
—

 
 
 
 
Outstanding, end of period
 
849,782

 
$22.02
 
 
 
 
Exercisable, end of period
 
326,128

 
$18.99
 
 
 
 
For the Year Ended December 31, 2012
 
 
 
 
 
 
 
 
Outstanding, beginning of period
 
849,782

 
$22.02
 
 
 
 
Granted
 
193,336

 
$25.56
 
 
 
 
Exercised
 
(7,295
)
 
$20.22
 
 
 
 
Forfeited
 
—

 
—

 
 
 
 
Outstanding, end of period
 
1,035,823

 
$22.69
 
 
 
 
Exercisable, end of period
 
613,934

 
$20.70
 
 
 
 
For the Year Ended December 31, 2013
 
 
 
 
 
 
 
 
Outstanding, beginning of period
 
1,035,823

 
$22.69
 
 
 
 
Granted
 
282,296

 
$28.68
 
 
 
 
Exercised
 
(207,184
)
 
$19.30
 
 
 
 
Forfeited
 
(24,704
)
 
$27.77
 
 
 
 
Outstanding, end of period
 
1,086,231

 
$24.78
 
2.8
21.12

$21.1
Exercisable, end of period
 
681,867

 
$22.55
 
2.7
14.78

$14.8
Schedule of Share-based Payment Award, Non-Options, Valuation Assumptions
The following table summarizes the weighted-average assumptions used in the Black-Scholes-Merton option pricing model to calculate the fair value of the SARs granted during 2013, 2012 and 2011:
 
 
December 31, 2013
 
December 31, 2012
 
December 31, 2011
Grant date fair value
 
$13.36
 
$12.23
 
$18.50
Volatility factor
 
44.5
%
 
48.2
%
 
61.6
%
Dividend yield
 
—
%
 
—
%
 
—
%
Risk-free interest rate
 
1.0
%
 
0.4
%
 
0.4
%
Expected term (in years)
 
3.5

 
3.0

 
2.9
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The table below summarizes restricted stock award and unit activity for the years ended December 31, 2013, 2012 and 2011:
 
 
Shares/
Units
 
Weighted-Average Grant Date
Fair Value
For the Year Ended December 31, 2011
 
 
 
 
Unvested restricted stock awards and units, beginning of period
 
710,955

 
$20.26
Granted
 
567,901

 
$35.27
Vested
 
(452,585
)
 
$25.29
Forfeited
 
(25,773
)
 
$23.30
Unvested restricted stock awards and units, end of period
 
800,498

 
$27.96
For the Year Ended December 31, 2012
 
 
 
 
Unvested restricted stock awards and units, beginning of period
 
800,498

 
$27.96
Granted
 
854,292

 
$25.25
Vested
 
(488,992
)
 
$25.63
Forfeited
 
(19,524
)
 
$27.61
Unvested restricted stock awards and units, end of period
 
1,146,274

 
$26.95
For the Year Ended December 31, 2013
 
 
 
 
Unvested restricted stock awards and units, beginning of period
 
1,146,274

 
$26.95
Granted
 
932,763

 
$28.16
Vested
 
(557,136
)
 
$25.98
Forfeited
 
(77,034
)
 
$26.03
Unvested restricted stock awards and units, end of period
 
1,444,867

 
$28.03