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Share-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 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 March 31, 2015, and changes during the three months ended March 31, 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
(191,215
)
 
$
18.76

Forfeited
(2,340
)
 
$
19.20

Nonvested at March 31, 2015
572,717

 
$
19.12