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Stock Warrants (Tables)
3 Months Ended
Mar. 31, 2015
Stockholders' Equity Note [Abstract]  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Stock Warrant activity for the quarters ended March 31, 2015 and 2014 consisted of:
 
 
 
2015
 
2014
 
 
 
 
 
Weighted
 
 
 
Weighted
 
 
 
Number of
 
Average
 
Number of
 
Average
 
 
 
Warrants
 
Exercise Price
 
Warrants
 
Exercise Price
 
Balance at January 1,
 
 
84,000
 
$
1.21
 
 
354,546
 
$
1.21
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Changes during the period:
 
 
 
 
 
 
 
 
 
 
 
 
 
Stock warrants granted
 
 
-
 
 
-
 
 
-
 
 
-
 
Stock warrants expired
 
 
-
 
 
-
 
 
-
 
 
-
 
Stock warrants exercised
 
 
-
 
 
-
 
 
(270,546)
 
 
1.21
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance at March 31,
 
 
84,000
 
$
1.21
 
 
84,000
 
$
1.21