CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) [Abstract]
Net (loss) income	$ (6,280)	$ 56	$ (29,983)	$ 306
Other comprehensive (loss):
Marketable securities, net of tax	5	(4)	5	(29)
Total comprehensive (loss) income	$ (6,275)	$ 52	$ (29,978)	$ 277