CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Net loss	$ (12,010)	$ (7,036)	$ (41,158)	$ (53,300)
Other comprehensive income (loss)
Unrealized gain (loss) on marketable securities - restricted	980	(1,802)	1,818	(1,581)
Reclassification of net (loss) gain on derivatives into earnings	0	(15)	(79)	213
Amortization of payments from settlement of forward interest rate swaps	0	94	179	282
Other	0	56	(39)	(194)
Total other comprehensive income (loss), net of tax	980	(1,667)	1,879	(1,280)
Comprehensive loss	$ (11,030)	$ (8,703)	$ (39,279)	$ (54,580)