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Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2011
Share-based Compensation [Abstract] 
Summary of company stock activities
The Company’s stock option activity for the nine months ended September 30, 2011 is summarized as follows: 
    
 
Shares
 
Weighted
Average
Exercise
Price
Outstanding at January 1, 2011
447,825

 
$
16.92

Cancelled
(6,600
)
 
$
18.27

Exercised
(134,500
)
 
$
13.91

Outstanding at
September 30, 2011
306,725

 
$
18.26

Vested and exercisable at September 30, 2011
306,725

 
$
18.26

Summary of company stock award
A summary of the status of the Company’s stock awards as of September 30, 2011, and changes during the nine months ended September 30, 2011, is presented below: 
    
 
Shares
 
Weighted
 Average
Grant-Date
Fair Value
Nonvested at January 1, 2011
187,140

 
$
18.42

Granted
179,750

 
$
17.48

Vested
(71,880
)
 
$
25.59

Forfeited
(2,580
)
 
$
17.44

Nonvested at September 30, 2011
292,430

 
$
16.09