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Warrants (Tables)
 12 Months Ended
Dec. 31, 2013
Warrants and Rights Note Disclosure [Abstract]  
Summary of Warrant Activity
The summary of warrant activity for the years ended December 31, 2012 and 2013 is as follows:
 
 
 
 
 
 
 
Weighted
 
 
 
 
 
 
 
 
Weighted
Average
 
 
 
 
 
 
 
Average
Remaining
 
Weighted
 
 
 
Number of
 
Exercise
Contractual
 
Average
 
 
 
Warrants
 
Price
Life (in years)
 
Fair Value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding at January 1, 2012
 
-
 
$
-
 
 
-
 
$
-
 
Granted
 
1,397,939
 
 
0.29
 
 
9.1
 
 
0.11
 
Exercised
 
-
 
 
-
 
 
-
 
 
-
 
Expired/cancelled
 
-
 
 
-
 
 
-
 
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding at December 31, 2012
 
1,397,939
 
$
0.29
 
 
9.1
 
$
0.09
 
Granted
 
 
 
 
 
 
 
 
 
 
 
 
Warrants assumed in merger with
 
 
 
 
 
 
 
 
 
 
 
 
SafeStitch
 
5,998,000
 
 
0.33
 
 
4.3
 
 
0.23
 
Exercised
 
(968,969)
 
 
0.29
 
 
-
 
 
1.05
 
Expired/cancelled
 
-
 
 
-
 
 
-
 
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding at December 31, 2013
 
6,426,970
 
$
0.29
 
 
4.7
 
$
0.35