CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net income (loss)	$ 36,975	$ (10,500)	$ 16,589	$ (34,021)
Other comprehensive income:
Net change in unrealized loss on auction rate securities	0	0	0	68
Total other comprehensive income	0	0	0	68
Comprehensive income (loss)	$ 36,975	$ (10,500)	$ 16,589	$ (33,953)