SHAREHOLDERS' EQUITY (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 2009
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares, outstanding (in shares)	12,904,455	13,042,313
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares outstanding (in shares)	0
Outstanding stock purchase warrants (in shares)	2,221,349	2,301,012	1,025,882
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)	6,668,229	6,668,229
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)	1,493,779	1,493,779
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)	1,571,523	1,571,523