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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Stock-based Compensation Expense
A summary of stock-based compensation expense for the six months ended June 30, 2013 and 2012 is as follows:

 
For the Six Months Ended June 30,
 
2013
 
2012
Stock Options
$
997,000

 
$
949,000

Restricted Stock
14,000

 

Employee Stock Purchase Plan (ESPP)
185,000

 
195,000

Total pre-tax stock-based compensation expense charged against income (1)
$
1,196,000

 
$
1,144,000


(1)
Stock-based compensation expense is recorded in the selling, general and administrative caption in our consolidated statements of comprehensive income.
Summary Of Other Information Of Stock Option Plans
Other information pertaining to activity of our stock awards during the six months ended June 30, 2013 and 2012 was as follows:

 
June 30, 2013
 
June 30, 2012
Total grant-date fair value of stock awards granted
$
3,412,000

 
$
2,438,000

Total fair value of stock awards vested during period
$
1,897,000

 
$
1,870,000

Total unrecognized compensation expense related to non-vested stock awards
$
5,982,000

 
$
4,948,000

A summary of our stock option activity is as follows:

 
Stock Options Outstanding
 
Number of Shares
 
Weighted Average Exercise Price
December 31, 2012
2,632,000

 
$
13.18

Granted
564,000

 
23.50

Cancelled
(49,000
)
 
18.21

Exercised
(378,000
)
 
12.46

June 30, 2013
2,769,000

 
$
15.29

Summarized Information Of Stock Options Outstanding
The following table summarizes other information about stock options at June 30, 2013.


 
Stock Options
Range of exercise prices
 
$3.68 - 23.50

Outstanding:
 
 
Weighted average remaining contractual life (years)
 
6.60

Aggregate intrinsic value
 
$
25,566,000

Exercisable:
 
 
Number of shares
 
1,174,000

Weighted average remaining contractual life (years)
 
4.50

Aggregate intrinsic value
 
$
15,846,000



Assumption For Fair Value Of Options Granted
The fair value of stock awards granted in 2013 and 2012 was estimated on the date of grant using the Black-Scholes option valuation model based on the following assumptions:

 
June 30, 2013
 
June 30, 2012
Risk-free interest rate
1.5%
 
1.3%
Weighted average expected life in years
6.0 years
 
6.8 years
Expected volatility
38.9%
 
39.2%
Dividend yield
2.8%
 
3.6%
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]
The stock-based compensation expense associated with our ESPP was estimated on the date of grant using the Black-Scholes option valuation model based on the following assumptions:

 
June 30, 2013
 
June 30, 2012
Risk-free interest rate
0.24%
 
0.19%
Weighted average expected life in years
1.0 year
 
1.0 year
Expected volatility
27.6%
 
36.5%
Dividend yield
2.8%
 
3.6%