STOCKHOLDERS' EQUITY (Details 2)	12 Months Ended					0 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2013 Common Stock USD ($)	Dec. 31, 2012 Common Stock USD ($)	Dec. 31, 2013 Private Placement April 2011 April 4, 2011 Warrants	Nov. 21, 2012 Private Placement November 2012 USD ($)	Nov. 21, 2012 Private Placement November 2012 CAD	Nov. 21, 2012 Private Placement November 2012 November 21, 2012 Warrants USD ($)	Dec. 31, 2013 Private Placement November 2012 November 21, 2012 Warrants	Nov. 21, 2012 Private Placement November 2012 November 21, 2012 Warrants	Nov. 21, 2012 Private Placement November 2012 November 21, 2012 Warrants Common Stock	Nov. 21, 2012 Private Placement November 2012 November 21, 2012 Warrants Common stock purchase warrant
Warrants - issued and outstanding
Exercise price (in dollars per share)					7.01			8.73	8.18	8.70
Number of warrants (in shares)	2,539,677				1,461,541				1,078,136
Gross proceeds from private placement						$ 26,100,000
Number of units issued in private placement (in shares)						3,593,819	3,593,819
Subscription price of units issued in a private placement (in dollars per share)						$ 7.28	7.25
Number of shares that can be purchased by each unit issued											1	0.30
Period during which warrants are exercisable								5 years
Exercise price as percentage of subscription or market price								120.00%
Issuance costs of units						1,300,000
Assumptions used for calculation of fair value of warrants issued
Weighted average risk-free interest rate (as a percent)								1.34%
Dividend yield (as a percent)								0.00%
Volatility factor (as a percent)								115.50%
Expected life								5 years
Fair value of warrants		4,942,000						4,900,000
Amount recorded as increase in common stock	$ 54,196,000	$ 19,886,000	$ 3,000	$ 4,000				$ 19,900,000