NET LOSS PER SHARE (Schedule of Potentially Dilutive Securities not Included in Diluted Loss Per Share Calculation) (Details)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total potentially dilutive securities (in Shares)	784,776	1,849,022
Options to purchase common shares [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total potentially dilutive securities (in Shares)	660,833	1,658,166
Unvested restricted stock units [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total potentially dilutive securities (in Shares)	16,771	83,684
Convertible preferred stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total potentially dilutive securities (in Shares)	107,172	107,172