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Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2015
Equity [Abstract]  
Additional information for warrants outstanding
The table below provides additional information for warrants outstanding as of December 31, 2015.
Warrants
 
Number of
warrants
 
Weighted
average
exercise price
 
Expiration date
Outstanding at December 31, 2014
*
21,239,213

 
$
0.75

 
Various from July 2015 through March 2017
Exercised
 
(19,034,662
)
 
0.74

 
 
Expired
 
(30,828
)
 
0.01

 
 
Outstanding and Exercisable at December 31, 2015
 
2,173,723

 
$
0.85

 
Various from
January 2017 through
March 2017