INVESTMENT IN NUSTAR ENERGY Table 2 (Details) (NuStar Energy [Member], USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
NuStar Energy [Member]
Statement of Income Information:
Revenues	$ 1,824,350	$ 1,138,379	$ 4,648,150	$ 3,208,849
Operating income	92,977	90,290	266,059	232,093
Net income	$ 70,281	$ 68,310	$ 191,402	$ 187,435