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Shareholders' Equity and Share Based Payment (Tables)
 12 Months Ended
Dec. 31, 2014
Shareholders’ Equity and Share Based Payment [Abstract]  
Schedule of Nonvested Restricted Stock Units Activity
A summary of the fair value of non-vested shares for the years ended December 31, 2012, 2013 and 2014 is as follows: 
Non vested Shares
Shares
(in  000’s)
 
Weighted
Average
Grant Date
Fair Value
Non-vested at January 1, 2012
942.8

 
$
10.44

Granted
241.0

 
13.26

Canceled
(110.8
)
 
10.56

Vested
(511.8
)
 
10.28

Non-vested at December 31, 2012
561.2

 
12.21

Granted
457.5

 
13.98

Canceled
(1.5
)
 
13.11

Vested
(322.5
)
 
11.96

Non-vested at December 31, 2013
694.7

 
13.49

Granted
341.1

 
18.80

Canceled
(69.1
)
 
15.89

Vested
(345.4
)
 
13.47

Non-vested at December 31, 2014
621.3

 
$
16.15