CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Comprehensive Income (Loss), Net of Tax:
Net income (loss)	$ 34,992	$ 65,993	$ (76,532)	$ (48,494)
Other comprehensive income (loss):
Interest rate swap	(2,263)	(748)	(2,161)	(748)
Capitalized swap interest	(159)		(569)
Pension plan adjustment		(63)		(128)
Other comprehensive loss	(2,422)	(811)	(2,730)	(876)
Comprehensive income (loss)	32,570	65,182	(79,262)	(49,370)
Comprehensive income attributable to noncontrolling interests	(682)	(20)	(1,418)	(48)
Comprehensive income (loss) attributable to common stockholders	$ 31,888	$ 65,162	$ (80,680)	$ (49,418)