Summary Of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Accounting Policies [Abstract]
Total interest costs incurred			$ 62,515	$ 52,585
Interest capitalized			(4,989)	(3,636)
Interest expense	28,733	23,905	57,526	48,949
Cash paid for interest, net of amounts capitalized			58,132	50,197
Cash paid for income taxes			255	537
Loans Assumed			0	42,938
NonCash Deconsolidation Of Variable Interest Entity			$ 0	$ 18,311