INVESTMENT IN NUSTAR ENERGY Table 2 (Details) - NuStar Energy [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Income Information:
Revenues	$ 1,756,682	$ 2,084,040	$ 3,075,118
Operating income	359,109	390,704	346,901
Income from continuing operations	150,003	305,946	214,169
Income (loss) from discontinued operations, net of tax	0	774	(3,791)
Net income	$ 150,003	$ 306,720	$ 210,378