STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2015

STOCKHOLDERS' EQUITY [Abstract]

Warrants outstanding and number of shares of common stock subject to exercise

The following table summarizes the warrants outstanding and the number of shares of common stock subject to exercise as of December 31, 2015 and the changes therein during the two years then ended:

	Number of Shares of Common Stock Subject to Exercise			Weighted – Average Exercise Price
Balance as of December 31, 2013		4,665,451		$	0.82
Warrants issued		80,000			1.20
Warrants exercised		(3,000,000	)		0.60
Warrants cancelled		(69,050	)		3.22
Balance as of December 31, 2014		1,676,401		$	1.14
Warrants issued		847,804			0.72
Warrants exercised		(392,857	)		0.35
Warrants cancelled		(357,155	)		2.85
Balance as of December 31, 2015		1,774,193		$	0.77

Expiration dates for warrants subject to exercise

Of the warrant shares subject to exercise as of December 31, 2015, expiration of the right to exercise is as follows:

Date of Expiration	Number of Warrant Shares of Common Stock Subject to Expiration
June 13, 2016		35,000
July 16, 2016		116,667
July 28, 2016		34,722
December 24, 2016		653,686
March 14, 2018		660,000
January 15, 2019		80,000
April 30, 2020		194,118
Total		1,774,193