INVESTMENT IN NUSTAR ENERGY Table 2 (Details) (NuStar Energy [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
NuStar Energy [Member]
Statement of Comprehensive Income Information:
Revenues	$ 554,944	$ 849,213
Operating income	99,281	81,103
Income from continuing operations	127,125	42,996
Income (loss) from discontinued operations, net of tax	774	(3,359)
Net income	$ 127,899	$ 39,637