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Share-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2015
Share-based Compensation [Abstract]  
Summary of company stock award
A summary of the status of the Company’s nonvested restricted stock awards as of June 30, 2015, and changes during the six months ended June 30, 2015, is presented below: 
 
Shares
 
Weighted Average
Grant-Date
Fair Value
Nonvested at January 1, 2015
498,862

 
$
18.35

Granted
267,410

 
$
20.30

Vested
(192,135
)
 
$
18.77

Forfeited
(5,120
)
 
$
19.40

Nonvested at June 30, 2015
569,017

 
$
19.11