CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Comprehensive income (loss), net of tax:
Net income (loss)	$ (50,192)		$ 165,024		$ (126,724)		$ 116,528
Other comprehensive income (loss):
Interest rate swaps	(954)	[1]	(2,024)	[1]	(3,115)	[1]	(2,772)	[1]
Capitalized swap interest	(328)	[2]			(897)	[2]
Other comprehensive loss	(1,282)		(2,024)		(4,012)		(2,772)
Comprehensive income (loss)	(51,474)		163,000		(130,736)		113,756
Comprehensive income (loss) attributable to noncontrolling interests	781		(729)		(637)		(777)
Comprehensive income (loss) attributable to common stockholders	$ (50,693)		$ 162,271		$ (131,373)		$ 112,979

[1] Net of deferred taxes of $1.1 million during both the three and nine months ended September 30, 2011. Net of deferred taxes of $ 0.1 million and $ 0.2 million during the three and nine months ended September 30, 2012, respectively.

[2] Net of deferred taxes of $ 0.2 million and $0.5 million during the three and nine months ended September 30, 2012, respectively.