NET LOSS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net loss attributable to common stock	$ (9,377)	$ (4,035)	$ (31,237)	$ (9,380)
Weighted average shares outstanding, basic and diluted (in shares)	51,063,000	50,882,000	51,180,000	51,070,000
Net loss per share, basic and diluted (in dollars per share)	$ (0.18)	$ (0.08)	$ (0.61)	$ (0.18)
Anti-dilutive securities excluded from diluted net loss per share calculation for stock-based compensation plans (in shares)	7,141	6,852	7,141	6,852