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Share-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 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 March 31, 2016, and changes during the three months ended March 31, 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
(199,069
)
 
$
16.43

Forfeited
(4,460
)
 
$
17.62

Nonvested at March 31, 2016
649,535

 
$
15.54