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Share-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2013
Share-based Compensation [Abstract]  
Summary of company stock award
A summary of the status of the Company’s stock awards as of June 30, 2013, and changes during the six months ended June 30, 2013, is presented below: 
 
Shares
 
Weighted
 Average
Grant-Date
Fair Value
Nonvested at January 1, 2013
346,860

 
$
17.06

Granted
209,650

 
$
21.92

Vested
(208,030
)
 
$
18.40

Forfeited
(8,590
)
 
$
18.20

Nonvested at June 30, 2013
339,890

 
$
19.20