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Share-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Stock Options Activity
A summary of option activity under the Plan as of December 31, 2015, and changes during the year then ended, is presented below:
 
 
 
Aggregate Intrinsic Value
 
Weighted-Average Remaining
Contractual Term (in years)
 
Options
 
Weighted-Average
Exercise Price
Outstanding at January 1, 2015
 
 
 
 
 
248,991

 
$
33.88

Granted
 
 
 
 
 

 

Exercised
 
 
 
 
 
(1,250
)
 
10.56

Expired
 
 
 
 
 
(14,375
)
 
60.68

Forfeited
 
 
 
 
 

 

Outstanding at December 31, 2015
 
$
1,282,272

 
2.95
 
233,366

 
$
32.36

Exercisable at December 31, 2015
 
$
1,272,738

 
2.94
 
231,875

 
$
32.44

Exercisable at December 31, 2014
 
 
 
 
 
243,686

 
$
34.16

Schedule of Restricted Stock Activity
The following table summarizes all restricted share activity to employees and non-employee members of the Board of Trustees as of December 31, 2015 and changes during the year then ended:
 
 
 
 
Number of Restricted
Shares
 
Weighted Average
Grant Date Fair
Value per share
Restricted shares outstanding at January 1, 2015
 
615,453

 
$
22.87

Shares granted
 
121,075

 
28.10

Shares forfeited
 
(358
)
 
21.49

Shares canceled
 
(274,835
)
 
21.25

Shares vested
 
(105,001
)
 
23.86

Restricted shares outstanding at December 31, 2015
 
356,334

 
$
25.61