Other Assets (Schedule Of Other Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Other Assets [Abstract]
Restricted cash-LT	$ 11,495	$ 11,392
Long-term investments	49,529	49,639
Prepaid land rent	57,510	43,697
Straight-line revenue	64,357	51,600
Other	28,911	17,680
Total Other Assets	$ 211,802	$ 174,008