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COMMON STOCK AND COMMON STOCK PURCHASE WARRANTS (Tables)
12 Months Ended
Dec. 31, 2013
Common Stock and Common Stock Purchase Warrants [Abstract]  
Warrants Issued and Outstanding
Warrants issued and outstanding at December 31, 2013, and changes during the three years then ended, are as follows:
 
 
 
 
 
 
Warrants Outstanding
 
 
 
 
 
 
 
Warrants Exercisable
 
 
 
 
 
 
Number of 
underlying
 shares
 
Weighted
Average
Exercise
Price
 
Average
Remaining
Contractual
Life (years)
 
Number of
 underlying 
shares
 
Weighted
Average
Exercise
Price
 
Average
Remaining
Contractual
Life (years)
 
Balance, January 1, 2011
 
1,138,420
 
$
3.62
 
 
2.91
 
1,138,420
 
$
3.62
 
 
2.91
 
Granted / Vested
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Forfeited
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exercised
 
(729,464)
 
 
3.63
 
 
 
 
 
 
 
 
 
 
 
 
Balance, December 31, 2011
 
408,956
 
$
3.59
 
 
1.89
 
408,956
 
$
3.59
 
 
1.89
 
Granted / Vested
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Forfeited
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exercised
 
(125,000)
 
 
3.50
 
 
 
 
 
 
 
 
 
 
 
 
Balance, December 31, 2012
 
283,956
 
$
3.63
 
 
0.91
 
283,956
 
$
3.63
 
 
0.91
 
Granted / Vested
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Forfeited
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exercised
 
(255,500)
 
 
3.50
 
 
 
 
 
 
 
 
 
 
 
 
Balance, December 31, 2013
 
28,456
 
$
4.80
 
 
0.68
 
28,456
 
$
4.80
 
 
0.68