STOCKHOLDERS' EQUITY AND SHARE-BASED COMPENSATION EXPENSE At the Market Offering Narrative (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Nov. 18, 2014
Equity [Abstract]
Common stock, par value (in dollars per share)	$ 0.01
Aggregate amount of offer		$ 50,000,000
Commission percent on gross proceeds from sale of stock		3.00%
Common stock sold (in shares)	2.2
Average share price (in usd per share)	$ 11.80
Net proceeds from sale of stock	$ 25,300,000