Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net income (loss)	$ (60,338)	$ (3,570)	$ (145,679)	$ (107,234)
Other comprehensive income (loss):
Change in fair value of interest rate hedges	1,794	(5,230)	1,262	(8,180)
Realized (gains) losses on interest rate hedges reclassified to earnings	8,098	8,940	16,384	17,850
Change in fair value of available-for-sale securities	0	(147)	0	(97)
Total other comprehensive income (loss)	9,892	3,563	17,646	9,573
Comprehensive income (loss) before allocation to noncontrolling interests	(50,446)	(7)	(128,033)	(97,661)
Allocation to noncontrolling interests	50	38	77	93
Comprehensive income (loss)	$ (50,396)	$ 31	$ (127,956)	$ (97,568)