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Share-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2016
Share-based Compensation [Abstract]  
Summary of company stock award
A summary of the status of the Company’s nonvested restricted stock awards as of September 30, 2016, and changes during the nine months ended September 30, 2016, is presented below: 
 
Shares
 
Weighted Average
Grant-Date
Fair Value
Nonvested at January 1, 2016
533,404

 
$
19.19

Granted
319,660

 
$
10.02

Vested
(207,229
)
 
$
16.44

Forfeited
(10,520
)
 
$
16.91

Nonvested at September 30, 2016
635,315

 
$
15.51