Unconsolidated Investments 2 (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Citrus [Member]
Statement of Operations Data:
Revenues	$ 194,361	$ 140,572	$ 308,246	$ 254,711
Operating income	118,716	77,323	168,598	129,694
Net earnings	47,173	46,460	96,526	76,087
Other Unconsolidated Investments [Member]
Statement of Operations Data:
Revenues	2,506	5,823	5,082	11,684
Operating income	705	3,297	1,637	6,482
Net earnings	$ 689	$ 3,101	$ 1,844	$ 6,270