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Shareholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2016
Stockholders' Equity Note [Abstract]  
Schedule of summary of shares granted and vested
A summary of shares granted and vested under the terms of the 2012 Plan from January 1, 2014 to December 31, 2016 is as follows:
 
Number of Shares
 
Weighted Average
Grant Date
Fair Value
Unvested shares at December 31, 2013
150,711

 
$
23.84

Shares granted in 2014
94,200

 
$
21.83

Shares vested / forfeited in 2014
(91,433
)
 
$
21.87

Unvested shares at December 31, 2014
153,478

 
$
23.39

Shares granted in 2015
99,000

 
$
16.30

Shares vested / forfeited in 2015
(93,604
)
 
$
16.17

Unvested shares at December 31, 2015
158,874

 
$
19.39

Shares granted in 2016
92,150

 
$
21.18

Shares vested / forfeited in 2016
(97,614
)
 
$
21.09

Unvested shares at December 31, 2016
153,410

 
$
19.92