DISTRIBUTIONS FROM NUSTAR ENERGY Table 2 (Details) - NuStar Energy [Member] - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				6 Months Ended
	Jul. 29, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Distributions from NuStar Energy (dates and totals)
NuStar Energy's cash distributions per unit applicable to limited partners (distribution earned)		$ 1.095	$ 1.095	$ 1.095	$ 1.095	$ 2.190	$ 2.190
NuStar Energy's total cash distributions (distribution earned)		$ 98,051	$ 98,051	$ 98,051	$ 98,051	$ 196,102	$ 196,102
NuStar Energy's distribution date of record (distribution earned)		Aug. 09, 2016	May 09, 2016	Feb. 08, 2016
NuStar Energy's distribution payment date (distribution earned)		Aug. 12, 2016	May 13, 2016	Feb. 12, 2016
Subsequent Event [Member]
Distributions from NuStar Energy (dates and totals)
NuStar Energy's distribution announcement date (distribution earned)	Jul. 29, 2016