Long-Term Debt (Interest Expense And Capitalized Interest) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Long-Term Debt [Abstract]
Interest expense	$ 99,152	$ 99,184	$ 105,775
Interest income	(2,079)	(1,407)	(923)
Capitalized interest	(1,277)	(12,474)	(48,119)
Interest expense, net	$ 95,796	$ 85,303	$ 56,733