STOCKHOLDERS' EQUITY AND SHARE-BASED COMPENSATION EXPENSE AT THE MARKET OFFERING NARRATIVE (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Nov. 18, 2014
Equity [Abstract]
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Aggregate amount of offer			$ 50,000,000.0
Commission percent on gross proceeds from sale of stock			3.00%
Common stock sold (in shares)	1.6	3.8
Average share price (in usd per share)	$ 12.41	$ 12.05
Net proceeds from sale of stock	$ 19,400,000	$ 44,700,000