COMMON STOCKHOLDERS' EQUITY (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
COMMON STOCKHOLDERS' EQUITY
Common stock, issued (in shares)	47,740,957	41,908,218
Common stock, outstanding (in shares)	47,740,957	41,908,218
Common stock sold in an underwritten public offering (in shares)	5,750,000